Yahoo Groups archive
Thread
2012-09-02 by Daeron
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp
2012-09-02 by STEPHEN PRATT
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp
2012-09-02 by Daeron
Well! it came with the synth many years ago!may be 7 years, i don't know how old is it! need to change it? Daeron... ________________________________ De: STEPHEN PRATT <alto.sax@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Domingo, 2 de septiembre, 2012 14:21:32 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote: >Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp > >
2012-09-02 by jammie
----- Original Message -----From: STEPHEN PRATTSent: Sunday, September 02, 2012 8:21 PMSubject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp
2012-09-02 by STEPHEN PRATT
Well! it came with the synth many years ago!may be 7 years, i don't know how old is it! need to change it?Daeron...De: STEPHEN PRATT <;alto.sax@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:21:32
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?On Sep 2, 2012, at 2:58 PM, Daeron wrote:Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp
2012-09-02 by Daeron
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! please sorry for my bad english is not my native language! Daeron... ________________________________ De: jammie <jammie.emma@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Domingo, 2 de septiembre, 2012 14:52:01 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! the fip controller chips are fualty its a common problem on the asr10 and the esq1 sq80 so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display and you cant get the chips any more i know i have tried as i fix these all the time we are working on an fpga design to replace but still in the designing and testing phase ----- Original Message -----
>From: STEPHEN PRATT >To: Ensoniq-VFX-SD@yahoogroups.com >Sent: Sunday, September 02, 2012 8:21 PM >Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > >How old is the backup battery? > > >On Sep 2, 2012, at 2:58 PM, Daeron wrote: > > >>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >> >> >
2012-09-02 by jammie
i see they have a spare panel
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 9:00 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
please sorry for my bad english is not my native language!
Daeron...
------------------------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualty
its a common problem on the asr10
and the esq1 sq80
so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display
and you cant get the chips any more i know i have tried as i fix these all the time
we are working on an fpga design to replace but still in the designing and testing phase
----- Original Message -----
From: STEPHEN PRATT
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 8:21 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp2012-09-02 by Daeron
Dear Stephen, Thanks a lot for the support! i will change this parts! cheers! Daeron... ________________________________ De: STEPHEN PRATT <alto.sax@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Domingo, 2 de septiembre, 2012 14:54:07 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! It's possible. If the cell is dead or shorted out internally it could prevent the OS from loading.
On Sep 2, 2012, at 3:31 PM, Daeron wrote: > > >Well! it came with the synth many years ago!may be 7 years, i don't know how old is it! need to change it? > >Daeron... > > >________________________________ > De: STEPHEN PRATT <alto.sax@...> >Para: Ensoniq-VFX-SD@yahoogroups.com >Enviado: Domingo, 2 de septiembre, 2012 14:21:32 >Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > >How old is the backup battery? > > >On Sep 2, 2012, at 2:58 PM, Daeron wrote: > > >>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >> >> > > > > >
2012-09-02 by Daeron
They have many accesories and spare parts but i don know which the correct chip! http://www.syntaur.com/vfx_parts.html Daeron... ________________________________ De: jammie <jammie.emma@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Domingo, 2 de septiembre, 2012 15:07:45 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! i see they have a spare panel ----- Original Message ----- >From: Daeron >To: Ensoniq-VFX-SD@yahoogroups.com >Sent: Sunday, September 02, 2012 9:00 PM >Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > >Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! > > > > please sorry for my bad english is not my native language!
> >Daeron... > > >________________________________ > De: jammie <jammie.emma@...> >Para: Ensoniq-VFX-SD@yahoogroups.com >Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > >the fip controller chips are fualty > >its a common problem on the asr10 > >and the esq1 sq80 > >so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display > >and you cant get the chips any more i know i have tried as i fix these all the time > >we are working on an fpga design to replace but still in the designing and testing phase >----- Original Message ----- >>From: STEPHEN PRATT >>To: Ensoniq-VFX-SD@yahoogroups.com >>Sent: Sunday, September 02, 2012 8:21 PM >>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >>How old is the backup battery? >> >> >>On Sep 2, 2012, at 2:58 PM, Daeron wrote: >> >> >>>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>> >>> >> > >
2012-09-02 by jammie
get the whole vfx screen display board those screen chips only do part of the fip control you also need the fip controllers theres 2 and a screen cpu scanner which is the large chip this deals with the controls of the buttons and interfaces with the button controls and the fip chip along with those driver chips the scanner cpu controls which buttons are pressed and what info to put on the screen its the scanner cpu chips that are the problem as well as the fip chips just no longer made thats why ensoniq had to go the lcd route with the fizmo and the later asr10 because nec stop production of the chips and the fip displays
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 9:16 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
They have many accesories and spare parts but i don know which the correct chip!
http://www.syntaur.com/vfx_parts.html
Daeron...
------------------------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 15:07:45
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
i see they have a spare panel
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 9:00 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
please sorry for my bad english is not my native language!
Daeron...
----------------------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualty
its a common problem on the asr10
and the esq1 sq80
so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display
and you cant get the chips any more i know i have tried as i fix these all the time
we are working on an fpga design to replace but still in the designing and testing phase
----- Original Message -----
From: STEPHEN PRATT
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 8:21 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp2012-09-03 by Andrea Venturoli
Hi, I was the same thing. One day the keyboard was dropped and started working again. Evidently it was not a battery problem, but rather the flat cables with oxidized contacts. I am the owner of a VFX-sd since it was sold and I have never changed the battery.
Cheers.
Svalvolazz
2012-09-04 by Daeron
Yes! the battery still works! i'm checking the flat cable! thanks a lot! Daeron... ________________________________ De: Andrea Venturoli <avmusic@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Lunes, 3 de septiembre, 2012 13:57:38 Asunto: [Ensoniq-VFX-SD] Re: Ensonix VFX-SD no work! Hi,I was the same thing. One day the keyboard was dropped and started working again. Evidently it was not a battery problem, but rather the flat cables with oxidized contacts. I am the owner of a VFX-sd since it was sold and I have never changed the battery. Cheers. Svalvolazz
2012-09-06 by Christian Brunschen
On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote: > Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: 4 * TL4810A to drive the choice of segments; and 2 * TL5812 to drive the columns. Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. In order to draw a complete screenful, I believe the display board does the following. The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. This means that the display will light up precisely those selected segments in column 0. Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: http://www.ebay.co.uk/itm/120922031767 http://www.ebay.co.uk/itm/110886748416 (the TL4810BN is an improved version of the TL4810A). Best wishes, // Christian Brunschen
> > please sorry for my bad english is not my native language! > Daeron... > De: jammie <jammie.emma@blueyonder.co.uk> > Para: Ensoniq-VFX-SD@yahoogroups.com > Enviado: Domingo, 2 de septiembre, 2012 14:52:01 > Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > the fip controller chips are fualty > > its a common problem on the asr10 > > and the esq1 sq80 > > so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display > > and you cant get the chips any more i know i have tried as i fix these all the time > > we are working on an fpga design to replace but still in the designing and testing phase > ----- Original Message ----- > From: STEPHEN PRATT > To: Ensoniq-VFX-SD@yahoogroups.com > Sent: Sunday, September 02, 2012 8:21 PM > Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > How old is the backup battery? > > On Sep 2, 2012, at 2:58 PM, Daeron wrote: > >> >> Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >> like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >> > > > > > >
2012-09-06 by jammie
----- Original Message -----From: Christian BrunschenSent: Thursday, September 06, 2012 1:10 PMSubject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote:
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpgAs on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:4 * TL4810A to drive the choice of segments; and2 * TL5812 to drive the columns.Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.In order to draw a complete screenful, I believe the display board does the following.The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.This means that the display will light up precisely those selected segments in column 0.Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:(the TL4810BN is an improved version of the TL4810A).Best wishes,// Christian Brunschen
please sorry for my bad english is not my native language!Daeron...De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualtyits a common problem on the asr10and the esq1 sq80so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same displayand you cant get the chips any more i know i have tried as i fix these all the timewe are working on an fpga design to replace but still in the designing and testing phase----- Original Message -----From: STEPHEN PRATTSent: Sunday, September 02, 2012 8:21 PMSubject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: ;http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp
2012-09-06 by Daeron
Dear Christian! thanks for you support! it's a very complete information, i will try to check every chip separately! Daeron... ________________________________ De: Christian Brunschen <cb@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Jueves, 6 de septiembre, 2012 7:10:19 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote: Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! > Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: 4 * TL4810A to drive the choice of segments; and 2 * TL5812 to drive the columns. Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. In order to draw a complete screenful, I believe the display board does the following. The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. This means that the display will light up precisely those selected segments in column 0. Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: http://www.ebay.co.uk/itm/120922031767 http://www.ebay.co.uk/itm/110886748416 (the TL4810BN is an improved version of the TL4810A). Best wishes, // Christian Brunschen
> > please sorry for my bad english is not my native language! > >Daeron... > > >________________________________ >De: jammie <jammie.emma@blueyonder.co.uk> >Para: Ensoniq-VFX-SD@yahoogroups.com >Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > >the fip controller chips are fualty > >its a common problem on the asr10 > >and the esq1 sq80 > >so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display > >and you cant get the chips any more i know i have tried as i fix these all the time > >we are working on an fpga design to replace but still in the designing and testing phase >----- Original Message ----- >>From: STEPHEN PRATT >>To: Ensoniq-VFX-SD@yahoogroups.com >>Sent: Sunday, September 02, 2012 8:21 PM >>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >>How old is the backup battery? >> >> >>On Sep 2, 2012, at 2:58 PM, Daeron wrote: >> >> >>>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>> >>> >> > > > >
2012-09-06 by Daeron
Ups! how can i check the 6500 processor? Daeron... ________________________________ De: jammie <jammie.emma@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Jueves, 6 de septiembre, 2012 7:40:49 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! but like chrstian said they are controlled by the 6500 processor and its this processor that usually goes fualty and you wont get any replacements unless yo scavange them from a working esq1 sq80 vfx sd1 very rare for the tl4810a and the tl5812 to be broken in all the years of servicing ensoniq keyboards and racks since 1989 i have never had to change them it has either been the vfd screen or the 6500 scnner cpu ----- Original Message ----- >From: Christian Brunschen >To: Ensoniq-VFX-SD@yahoogroups.com >Sent: Thursday, September 06, 2012 1:10 PM >Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > >On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote: > >Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! >> > > >Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg > > >As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: > > >4 * TL4810A to drive the choice of segments; and >2 * TL5812 to drive the columns. > > >Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). > > >The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. > > >The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. > > >In order to draw a complete screenful, I believe the display board does the following. > > >The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. > > >At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. > > >This means that the display will light up precisely those selected segments in column 0. > > >Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. > > >Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. > > >Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: > > > http://www.ebay.co.uk/itm/120922031767 > > > http://www.ebay.co.uk/itm/110886748416 > > >(the TL4810BN is an improved version of the TL4810A). > > >Best wishes, > > >// Christian Brunschen > > > > >> >> please sorry for my bad english is not my native language! >> >>Daeron... >> >> >>________________________________ >> De: jammie <jammie.emma@....uk> >>Para: Ensoniq-VFX-SD@yahoogroups.com >>Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >>the fip controller chips are fualty
>> >>its a common problem on the asr10 >> >>and the esq1 sq80 >> >>so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >> >>and you cant get the chips any more i know i have tried as i fix these all the time >> >>we are working on an fpga design to replace but still in the designing and testing phase >>----- Original Message ----- >>>From: STEPHEN PRATT >>>To: Ensoniq-VFX-SD@yahoogroups.com >>>Sent: Sunday, September 02, 2012 8:21 PM >>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> >>>How old is the backup battery? >>> >>> >>>On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>> >>> >>>>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>> >>>> >>> >> >> >> >> >
2012-09-06 by Christian Brunschen
On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote: > Dear Christian! > thanks for you support! it's a very complete information, i will try to check every chip separately! Hi Daeron, from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue? > Daeron... // Christian
> De: Christian Brunschen <cb@...> > Para: Ensoniq-VFX-SD@yahoogroups.com > Enviado: Jueves, 6 de septiembre, 2012 7:10:19 > Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@yahoo.com.mx> wrote: > >> Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! > > Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg > > As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: > > 4 * TL4810A to drive the choice of segments; and > 2 * TL5812 to drive the columns. > > Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). > > The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. > > The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. > > In order to draw a complete screenful, I believe the display board does the following. > > The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. > > At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. > > This means that the display will light up precisely those selected segments in column 0. > > Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. > > Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. > > Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: > > http://www.ebay.co.uk/itm/120922031767 > > http://www.ebay.co.uk/itm/110886748416 > > (the TL4810BN is an improved version of the TL4810A). > > Best wishes, > > // Christian Brunschen > > >> >> please sorry for my bad english is not my native language! >> Daeron... >> De: jammie <jammie.emma@...> >> Para: Ensoniq-VFX-SD@yahoogroups.com >> Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> the fip controller chips are fualty >> >> its a common problem on the asr10 >> >> and the esq1 sq80 >> >> so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >> >> and you cant get the chips any more i know i have tried as i fix these all the time >> >> we are working on an fpga design to replace but still in the designing and testing phase >> ----- Original Message ----- >> From: STEPHEN PRATT >> To: Ensoniq-VFX-SD@yahoogroups.com >> Sent: Sunday, September 02, 2012 8:21 PM >> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >> How old is the backup battery? >> >> On Sep 2, 2012, at 2:58 PM, Daeron wrote: >> >>> >>> Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>> like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>> >> >> >> >> >> > > > > > >
2012-09-06 by Daeron
Yes! i change the power supply thinking that was the problem the but it was not! Daeron... ________________________________ De: Christian Brunschen <cb@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Jueves, 6 de septiembre, 2012 8:37:01 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@yahoo.com.mx> wrote: Dear Christian! >thanks for you support! it's a very complete information, i will try to check every chip separately! > Hi Daeron, from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue? Daeron... // Christian
>________________________________ >De: Christian Brunschen <cb@df.lth.se> >Para: Ensoniq-VFX-SD@yahoogroups.com >Enviado: Jueves, 6 de septiembre, 2012 7:10:19 >Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > >On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@yahoo.com.mx> wrote: > >Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! >> > > >Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg > > >As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: > > >4 * TL4810A to drive the choice of segments; and >2 * TL5812 to drive the columns. > > >Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). > > >The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. > > >The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. > > >In order to draw a complete screenful, I believe the display board does the following. > > >The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. > > >At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. > > >This means that the display will light up precisely those selected segments in column 0. > > >Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. > > >Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. > > >Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: > > > http://www.ebay.co.uk/itm/120922031767 > > > http://www.ebay.co.uk/itm/110886748416 > > >(the TL4810BN is an improved version of the TL4810A). > > >Best wishes, > > >// Christian Brunschen > > > > >> >> please sorry for my bad english is not my native language! >> >>Daeron... >> >> >>________________________________ >>De: jammie <jammie.emma@...> >>Para: Ensoniq-VFX-SD@yahoogroups.com >>Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >>the fip controller chips are fualty >> >>its a common problem on the asr10 >> >>and the esq1 sq80 >> >>so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >> >>and you cant get the chips any more i know i have tried as i fix these all the time >> >>we are working on an fpga design to replace but still in the designing and testing phase >>----- Original Message ----- >>>From: STEPHEN PRATT >>>To: Ensoniq-VFX-SD@yahoogroups.com >>>Sent: Sunday, September 02, 2012 8:21 PM >>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> >>>How old is the backup battery? >>> >>> >>>On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>> >>> >>>>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>> >>>> >>> >> >> >> >> > > > > >
2012-09-06 by jammie
you could change many parts to find out its not that that was broken you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see what cycles and voltages and timmings are supposed to happen and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data and the problem is its not available we have had to do it the brut force method with a logic anyliser and recording all the functions and then copying them onto a fpga logic circuit its alot of work and we are still in the design phase of the project with this new interface chip as it is needed to keep alive lots of ensoniq synths as in the past i have had to put to pastures several metal case esq1 becuase of this chip you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts as you could be changing lots of parts for nothing and it might still not work
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 2:48 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Yes! i change the power supply thinking that was the problem the but it was not!
Daeron...
------------------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 8:37:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote:
Dear Christian!
thanks for you support! it's a very complete information, i will try to check every chip separately!
Hi Daeron,
from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue?
Daeron...
// Christian
----------------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 7:10:19
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote:
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg
As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:
4 * TL4810A to drive the choice of segments; and
2 * TL5812 to drive the columns.
Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).
The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.
The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.
In order to draw a complete screenful, I believe the display board does the following.
The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.
At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.
This means that the display will light up precisely those selected segments in column 0.
Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.
Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.
Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:
http://www.ebay.co.uk/itm/120922031767
http://www.ebay.co.uk/itm/110886748416
(the TL4810BN is an improved version of the TL4810A).
Best wishes,
// Christian Brunschen
please sorry for my bad english is not my native language!
Daeron...
--------------------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualty
its a common problem on the asr10
and the esq1 sq80
so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display
and you cant get the chips any more i know i have tried as i fix these all the time
we are working on an fpga design to replace but still in the designing and testing phase
----- Original Message -----
From: STEPHEN PRATT
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 8:21 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp2012-09-06 by Christian Brunschen
Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html Best wishes, // Christian
On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@...> wrote: > > > you could change many parts to find out its not that that was broken > > you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see > > what cycles and voltages and timmings are supposed to happen > > and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data > > and the problem is its not available > > we have had to do it the brut force method with a logic anyliser and recording all the functions > > and then copying them onto a fpga logic circuit > > its alot of work and we are still in the design phase of the project with this new interface chip > > as it is needed to keep alive lots of ensoniq synths > > as in the past i have had to put to pastures several metal case esq1 becuase of this chip > > you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts > > as you could be changing lots of parts for nothing and it might still not work > ----- Original Message ----- > > > From: Daeron > To: Ensoniq-VFX-SD@yahoogroups.com > Sent: Thursday, September 06, 2012 2:48 PM > Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > Yes! i change the power supply thinking that was the problem the but it was not! > > > Daeron... > De: Christian Brunschen <cb@...> > Para: Ensoniq-VFX-SD@yahoogroups.com > Enviado: Jueves, 6 de septiembre, 2012 8:37:01 > Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote: > >> Dear Christian! >> thanks for you support! it's a very complete information, i will try to check every chip separately! > > Hi Daeron, > > from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue? > >> Daeron... > > // Christian > > >> De: Christian Brunschen <cb@...> >> Para: Ensoniq-VFX-SD@yahoogroups.com >> Enviado: Jueves, 6 de septiembre, 2012 7:10:19 >> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...m.mx> wrote: >> >>> Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! >> >> Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg >> >> As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: >> >> 4 * TL4810A to drive the choice of segments; and >> 2 * TL5812 to drive the columns. >> >> Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). >> >> The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. >> >> The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. >> >> In order to draw a complete screenful, I believe the display board does the following. >> >> The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. >> >> At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. >> >> This means that the display will light up precisely those selected segments in column 0. >> >> Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. >> >> Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. >> >> Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: >> >> http://www.ebay.co.uk/itm/120922031767 >> >> http://www.ebay.co.uk/itm/110886748416 >> >> (the TL4810BN is an improved version of the TL4810A). >> >> Best wishes, >> >> // Christian Brunschen >> >> >>> >>> please sorry for my bad english is not my native language! >>> Daeron... >>> De: jammie <jammie.emma@blueyonder.co.uk> >>> Para: Ensoniq-VFX-SD@yahoogroups.com >>> Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >>> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> the fip controller chips are fualty >>> >>> its a common problem on the asr10 >>> >>> and the esq1 sq80 >>> >>> so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >>> >>> and you cant get the chips any more i know i have tried as i fix these all the time >>> >>> we are working on an fpga design to replace but still in the designing and testing phase >>> ----- Original Message ----- >>> From: STEPHEN PRATT >>> To: Ensoniq-VFX-SD@yahoogroups.com >>> Sent: Sunday, September 02, 2012 8:21 PM >>> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> >>> How old is the backup battery? >>> >>> On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>> >>>> >>>> Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>> like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>> >>> >>> >>> >>> >>> >> >> >> >> >> > > > > > > >
2012-09-06 by jammie
you cant as there masked you cant read them already tried that ensoniq were good at keeping there stuff secret as emu use the same chips in the emax 1/2 and e3 but epr can still get the chips with the correct code burned into them same cpu chip but different prom code
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 5:40 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html
Best wishes,
// Christian
On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@blueyonder.co.uk> wrote:
you could change many parts to find out its not that that was broken
you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see
what cycles and voltages and timmings are supposed to happen
and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data
and the problem is its not available
we have had to do it the brut force method with a logic anyliser and recording all the functions
and then copying them onto a fpga logic circuit
its alot of work and we are still in the design phase of the project with this new interface chip
as it is needed to keep alive lots of ensoniq synths
as in the past i have had to put to pastures several metal case esq1 becuase of this chip
you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts
as you could be changing lots of parts for nothing and it might still not work
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 2:48 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Yes! i change the power supply thinking that was the problem the but it was not!
Daeron...
--------------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 8:37:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote:
Dear Christian!
thanks for you support! it's a very complete information, i will try to check every chip separately!
Hi Daeron,
from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue?
Daeron...
// Christian
------------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 7:10:19
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote:
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg
As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:
4 * TL4810A to drive the choice of segments; and
2 * TL5812 to drive the columns.
Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).
The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.
The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.
In order to draw a complete screenful, I believe the display board does the following.
The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.
At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.
This means that the display will light up precisely those selected segments in column 0.
Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.
Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.
Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:
http://www.ebay.co.uk/itm/120922031767
http://www.ebay.co.uk/itm/110886748416
(the TL4810BN is an improved version of the TL4810A).
Best wishes,
// Christian Brunschen
please sorry for my bad english is not my native language!
Daeron...
----------------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualty
its a common problem on the asr10
and the esq1 sq80
so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display
and you cant get the chips any more i know i have tried as i fix these all the time
we are working on an fpga design to replace but still in the designing and testing phase
----- Original Message -----
From: STEPHEN PRATT
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 8:21 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp2012-09-06 by Rish
Hey just in case this is a matter of using a PS from say a VFX to a VFXSD or a VFXSD to a SD1, this will not give a operational outcome. I have tested many parts from all these units in a mix and match process and posted my findings in the F.A.Qs section of our VFX yahoo group. Hope this helps Rish Life is like MIDI, your either IN, OUT or THRU.
On Sep 6, 2012, at 8:48 AM, Daeron <daeron_elf@...> wrote: > Yes! i change the power supply thinking that was the problem the but it was not! > > > Daeron... > De: Christian Brunschen <cb@...> > Para: Ensoniq-VFX-SD@yahoogroups.com > Enviado: Jueves, 6 de septiembre, 2012 8:37:01 > Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote: > >> Dear Christian! >> thanks for you support! it's a very complete information, i will try to check every chip separately! > > Hi Daeron, > > from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue? > >> Daeron... > > // Christian > > >> De: Christian Brunschen <cb@...> >> Para: Ensoniq-VFX-SD@yahoogroups.com >> Enviado: Jueves, 6 de septiembre, 2012 7:10:19 >> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@yahoo.com.mx> wrote: >> >>> Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! >> >> Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg >> >> As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: >> >> 4 * TL4810A to drive the choice of segments; and >> 2 * TL5812 to drive the columns. >> >> Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). >> >> The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. >> >> The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. >> >> In order to draw a complete screenful, I believe the display board does the following. >> >> The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. >> >> At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. >> >> This means that the display will light up precisely those selected segments in column 0. >> >> Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. >> >> Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. >> >> Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: >> >> http://www.ebay.co.uk/itm/120922031767 >> >> http://www.ebay.co.uk/itm/110886748416 >> >> (the TL4810BN is an improved version of the TL4810A). >> >> Best wishes, >> >> // Christian Brunschen >> >> >>> >>> please sorry for my bad english is not my native language! >>> Daeron... >>> De: jammie <jammie.emma@...> >>> Para: Ensoniq-VFX-SD@yahoogroups.com >>> Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >>> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> the fip controller chips are fualty >>> >>> its a common problem on the asr10 >>> >>> and the esq1 sq80 >>> >>> so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >>> >>> and you cant get the chips any more i know i have tried as i fix these all the time >>> >>> we are working on an fpga design to replace but still in the designing and testing phase >>> ----- Original Message ----- >>> From: STEPHEN PRATT >>> To: Ensoniq-VFX-SD@yahoogroups.com >>> Sent: Sunday, September 02, 2012 8:21 PM >>> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> >>> How old is the backup battery? >>> >>> On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>> >>>> >>>> Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>> like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>> >>> >>> >>> >>> >>> >> >> >> >> >> > > > > > Reply via web post Reply to sender Reply to group
2012-09-06 by Christian Brunschen
On Sep 6, 2012, at 6:14 PM, "jammie" <jammie.emma@...> wrote: > > you cant as there masked you cant read them Not directly, no - but the decapping is all about exposing the chip itself, and directly reading the masked data, optically. That's what's described at the link that I included, and is used specifically for chips such as the 6500/11 where there's non-directly-readable ROM attached to a microcontroller or similar. Best wishes, // Christian
> already tried that > > ensoniq were good at keeping there stuff secret > > as emu use the same chips in the emax 1/2 and e3 > > but epr can still get the chips with the correct code burned into them > > same cpu chip but different prom code > ----- Original Message ----- > From: Christian Brunschen > To: Ensoniq-VFX-SD@yahoogroups.com > Sent: Thursday, September 06, 2012 5:40 PM > Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html > > > Best wishes, > > // Christian > > On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@blueyonder.co.uk> wrote: > >> >> >> you could change many parts to find out its not that that was broken >> >> you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see >> >> what cycles and voltages and timmings are supposed to happen >> >> and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data >> >> and the problem is its not available >> >> we have had to do it the brut force method with a logic anyliser and recording all the functions >> >> and then copying them onto a fpga logic circuit >> >> its alot of work and we are still in the design phase of the project with this new interface chip >> >> as it is needed to keep alive lots of ensoniq synths >> >> as in the past i have had to put to pastures several metal case esq1 becuase of this chip >> >> you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts >> >> as you could be changing lots of parts for nothing and it might still not work >> ----- Original Message ----- >> >> >> From: Daeron >> To: Ensoniq-VFX-SD@yahoogroups.com >> Sent: Thursday, September 06, 2012 2:48 PM >> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >> Yes! i change the power supply thinking that was the problem the but it was not! >> >> >> Daeron... >> De: Christian Brunschen <cb@...> >> Para: Ensoniq-VFX-SD@yahoogroups.com >> Enviado: Jueves, 6 de septiembre, 2012 8:37:01 >> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >> On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote: >> >>> Dear Christian! >>> thanks for you support! it's a very complete information, i will try to check every chip separately! >> >> Hi Daeron, >> >> from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue? >> >>> Daeron... >> >> // Christian >> >> >>> De: Christian Brunschen <cb@...> >>> Para: Ensoniq-VFX-SD@yahoogroups.com >>> Enviado: Jueves, 6 de septiembre, 2012 7:10:19 >>> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote: >>> >>>> Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! >>> >>> Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg >>> >>> As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: >>> >>> 4 * TL4810A to drive the choice of segments; and >>> 2 * TL5812 to drive the columns. >>> >>> Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). >>> >>> The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. >>> >>> The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. >>> >>> In order to draw a complete screenful, I believe the display board does the following. >>> >>> The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. >>> >>> At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. >>> >>> This means that the display will light up precisely those selected segments in column 0. >>> >>> Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. >>> >>> Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. >>> >>> Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: >>> >>> http://www.ebay.co.uk/itm/120922031767 >>> >>> http://www.ebay.co.uk/itm/110886748416 >>> >>> (the TL4810BN is an improved version of the TL4810A). >>> >>> Best wishes, >>> >>> // Christian Brunschen >>> >>> >>>> >>>> please sorry for my bad english is not my native language! >>>> Daeron... >>>> De: jammie <jammie.emma@blueyonder.co.uk> >>>> Para: Ensoniq-VFX-SD@yahoogroups.com >>>> Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >>>> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>> >>>> the fip controller chips are fualty >>>> >>>> its a common problem on the asr10 >>>> >>>> and the esq1 sq80 >>>> >>>> so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >>>> >>>> and you cant get the chips any more i know i have tried as i fix these all the time >>>> >>>> we are working on an fpga design to replace but still in the designing and testing phase >>>> ----- Original Message ----- >>>> From: STEPHEN PRATT >>>> To: Ensoniq-VFX-SD@yahoogroups.com >>>> Sent: Sunday, September 02, 2012 8:21 PM >>>> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>> >>>> >>>> How old is the backup battery? >>>> >>>> On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>>> >>>>> >>>>> Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>>> like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >>> >>> >>> >> >> >> >> >> >> > > > > >
2012-09-06 by jammie
thats a neat way of doing it i have some spare broken chips you can get ones with flash rom socket on that you install a rom on these were use for debugging your code before you commited to mask you can still get these chips so being able to read the code data would give us a bin file to write new chips finding some one todo it for use is the thing
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 6:47 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 6:14 PM, "jammie" <jammie.emma@...> wrote:
you cant as there masked you cant read them
Not directly, no - but the decapping is all about exposing the chip itself, and directly reading the masked data, optically. That's what's described at the link that I included, and is used specifically for chips such as the 6500/11 where there's non-directly-readable ROM attached to a microcontroller or similar.
Best wishes,
// Christian
already tried that
ensoniq were good at keeping there stuff secret
as emu use the same chips in the emax 1/2 and e3
but epr can still get the chips with the correct code burned into them
same cpu chip but different prom code
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 5:40 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html
Best wishes,
// Christian
On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@...> wrote:
you could change many parts to find out its not that that was broken
you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see
what cycles and voltages and timmings are supposed to happen
and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data
and the problem is its not available
we have had to do it the brut force method with a logic anyliser and recording all the functions
and then copying them onto a fpga logic circuit
its alot of work and we are still in the design phase of the project with this new interface chip
as it is needed to keep alive lots of ensoniq synths
as in the past i have had to put to pastures several metal case esq1 becuase of this chip
you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts
as you could be changing lots of parts for nothing and it might still not work
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 2:48 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Yes! i change the power supply thinking that was the problem the but it was not!
Daeron...
----------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@...m
Enviado: Jueves, 6 de septiembre, 2012 8:37:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote:
Dear Christian!
thanks for you support! it's a very complete information, i will try to check every chip separately!
Hi Daeron,
from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue?
Daeron...
// Christian
--------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 7:10:19
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote:
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg
As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:
4 * TL4810A to drive the choice of segments; and
2 * TL5812 to drive the columns.
Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).
The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.
The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.
In order to draw a complete screenful, I believe the display board does the following.
The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.
At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.
This means that the display will light up precisely those selected segments in column 0.
Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.
Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.
Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:
http://www.ebay.co.uk/itm/120922031767
http://www.ebay.co.uk/itm/110886748416
(the TL4810BN is an improved version of the TL4810A).
Best wishes,
// Christian Brunschen
please sorry for my bad english is not my native language!
Daeron...
------------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualty
its a common problem on the asr10
and the esq1 sq80
so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display
and you cant get the chips any more i know i have tried as i fix these all the time
we are working on an fpga design to replace but still in the designing and testing phase
----- Original Message -----
From: STEPHEN PRATT
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 8:21 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp2012-09-06 by jammie
i have sent a message to the guru to see with a donation and a chip if they could decap our mask rom and read the code into a bin files for us so we can write new 6500 chips with eproms which are still available to buy making it possible to extend the life of these instruments
----- Original Message -----
From: jammie
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 7:15 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
thats a neat way of doing it
i have some spare broken chips
you can get ones with flash rom socket on that you install a rom on
these were use for debugging your code before you commited to mask
you can still get these chips
so being able to read the code data would give us a bin file to write new chips
finding some one todo it for use is the thing
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 6:47 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 6:14 PM, "jammie" <jammie.emma@...> wrote:
you cant as there masked you cant read them
Not directly, no - but the decapping is all about exposing the chip itself, and directly reading the masked data, optically. That's what's described at the link that I included, and is used specifically for chips such as the 6500/11 where there's non-directly-readable ROM attached to a microcontroller or similar.
Best wishes,
// Christian
already tried that
ensoniq were good at keeping there stuff secret
as emu use the same chips in the emax 1/2 and e3
but epr can still get the chips with the correct code burned into them
same cpu chip but different prom code
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 5:40 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html
Best wishes,
// Christian
On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@...> wrote:
you could change many parts to find out its not that that was broken
you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see
what cycles and voltages and timmings are supposed to happen
and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data
and the problem is its not available
we have had to do it the brut force method with a logic anyliser and recording all the functions
and then copying them onto a fpga logic circuit
its alot of work and we are still in the design phase of the project with this new interface chip
as it is needed to keep alive lots of ensoniq synths
as in the past i have had to put to pastures several metal case esq1 becuase of this chip
you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts
as you could be changing lots of parts for nothing and it might still not work
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 2:48 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Yes! i change the power supply thinking that was the problem the but it was not!
Daeron...
--------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 8:37:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote:
Dear Christian!
thanks for you support! it's a very complete information, i will try to check every chip separately!
Hi Daeron,
from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue?
Daeron...
// Christian
------------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 7:10:19
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote:
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg
As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:
4 * TL4810A to drive the choice of segments; and
2 * TL5812 to drive the columns.
Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).
The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.
The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.
In order to draw a complete screenful, I believe the display board does the following.
The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.
At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.
This means that the display will light up precisely those selected segments in column 0.
Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.
Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.
Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:
http://www.ebay.co.uk/itm/120922031767
http://www.ebay.co.uk/itm/110886748416
(the TL4810BN is an improved version of the TL4810A).
Best wishes,
// Christian Brunschen
please sorry for my bad english is not my native language!
Daeron...
----------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualty
its a common problem on the asr10
and the esq1 sq80
so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display
and you cant get the chips any more i know i have tried as i fix these all the time
we are working on an fpga design to replace but still in the designing and testing phase
----- Original Message -----
From: STEPHEN PRATT
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 8:21 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp2012-09-06 by Christian Brunschen
I would be interested in the contents of the ROM part of the 6500/11 as well – so that the display processor can be properly emulated. I'm also more than willing to pitch in for a donation to make this happen! Best wishes, // Christian
On 6 Sep 2012, at 19:34, jammie wrote: > > > i have sent a message to the guru > > to see with a donation and a chip if they could > > decap our mask rom and read the code into a bin files for us so we can write new 6500 chips with eproms which are still available to buy making it possible to extend the life of these > instruments > ----- Original Message ----- > From: jammie > To: Ensoniq-VFX-SD@yahoogroups.com > Sent: Thursday, September 06, 2012 7:15 PM > Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > > thats a neat way of doing it > > i have some spare broken chips > > you can get ones with flash rom socket on that you install a rom on > > these were use for debugging your code before you commited to mask > > you can still get these chips > > so being able to read the code data would give us a bin file to write new chips > > finding some one todo it for use is the thing > ----- Original Message ----- > From: Christian Brunschen > To: Ensoniq-VFX-SD@yahoogroups.com > Sent: Thursday, September 06, 2012 6:47 PM > Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! > > > > > On Sep 6, 2012, at 6:14 PM, "jammie" <jammie.emma@...> wrote: > >> >> you cant as there masked you cant read them > > Not directly, no - but the decapping is all about exposing the chip itself, and directly reading the masked data, optically. That's what's described at the link that I included, and is used specifically for chips such as the 6500/11 where there's non-directly-readable ROM attached to a microcontroller or similar. > > Best wishes, > > // Christian > >> already tried that >> >> ensoniq were good at keeping there stuff secret >> >> as emu use the same chips in the emax 1/2 and e3 >> >> but epr can still get the chips with the correct code burned into them >> >> same cpu chip but different prom code >> ----- Original Message ----- >> From: Christian Brunschen >> To: Ensoniq-VFX-SD@yahoogroups.com >> Sent: Thursday, September 06, 2012 5:40 PM >> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html >> >> >> Best wishes, >> >> // Christian >> >> On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@...> wrote: >> >>> >>> >>> you could change many parts to find out its not that that was broken >>> >>> you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see >>> >>> what cycles and voltages and timmings are supposed to happen >>> >>> and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data >>> >>> and the problem is its not available >>> >>> we have had to do it the brut force method with a logic anyliser and recording all the functions >>> >>> and then copying them onto a fpga logic circuit >>> >>> its alot of work and we are still in the design phase of the project with this new interface chip >>> >>> as it is needed to keep alive lots of ensoniq synths >>> >>> as in the past i have had to put to pastures several metal case esq1 becuase of this chip >>> >>> you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts >>> >>> as you could be changing lots of parts for nothing and it might still not work >>> ----- Original Message ----- >>> >>> >>> From: Daeron >>> To: Ensoniq-VFX-SD@yahoogroups.com >>> Sent: Thursday, September 06, 2012 2:48 PM >>> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> >>> Yes! i change the power supply thinking that was the problem the but it was not! >>> >>> >>> Daeron... >>> De: Christian Brunschen <cb@...> >>> Para: Ensoniq-VFX-SD@yahoogroups.com >>> Enviado: Jueves, 6 de septiembre, 2012 8:37:01 >>> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> >>> On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote: >>> >>>> Dear Christian! >>>> thanks for you support! it's a very complete information, i will try to check every chip separately! >>> >>> Hi Daeron, >>> >>> from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue? >>> >>>> Daeron... >>> >>> // Christian >>> >>> >>>> De: Christian Brunschen <cb@...> >>>> Para: Ensoniq-VFX-SD@yahoogroups.com >>>> Enviado: Jueves, 6 de septiembre, 2012 7:10:19 >>>> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>> >>>> On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote: >>>> >>>>> Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! >>>> >>>> Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg >>>> >>>> As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: >>>> >>>> 4 * TL4810A to drive the choice of segments; and >>>> 2 * TL5812 to drive the columns. >>>> >>>> Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). >>>> >>>> The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. >>>> >>>> The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. >>>> >>>> In order to draw a complete screenful, I believe the display board does the following. >>>> >>>> The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. >>>> >>>> At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. >>>> >>>> This means that the display will light up precisely those selected segments in column 0. >>>> >>>> Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. >>>> >>>> Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. >>>> >>>> Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: >>>> >>>> http://www.ebay.co.uk/itm/120922031767 >>>> >>>> http://www.ebay.co.uk/itm/110886748416 >>>> >>>> (the TL4810BN is an improved version of the TL4810A). >>>> >>>> Best wishes, >>>> >>>> // Christian Brunschen >>>> >>>> >>>>> >>>>> please sorry for my bad english is not my native language! >>>>> Daeron... >>>>> De: jammie <jammie.emma@...> >>>>> Para: Ensoniq-VFX-SD@yahoogroups.com >>>>> Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >>>>> Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>>> >>>>> the fip controller chips are fualty >>>>> >>>>> its a common problem on the asr10 >>>>> >>>>> and the esq1 sq80 >>>>> >>>>> so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >>>>> >>>>> and you cant get the chips any more i know i have tried as i fix these all the time >>>>> >>>>> we are working on an fpga design to replace but still in the designing and testing phase >>>>> ----- Original Message ----- >>>>> From: STEPHEN PRATT >>>>> To: Ensoniq-VFX-SD@yahoogroups.com >>>>> Sent: Sunday, September 02, 2012 8:21 PM >>>>> Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>>> >>>>> >>>>> How old is the backup battery? >>>>> >>>>> On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>>>> >>>>>> >>>>>> Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>>>> like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>> >>>> >>>> >>>> >>>> >>> >>> >>> >>> >>> >>> >> >> >> >> > > > > > >
2012-09-06 by jammie
i can get new vfd displays made with controler chips built in which would do away with all the interface chips but would need the cpu scanner for control on the asr and eps series they use non masked rom chip[s there 2 fip control chips made by nec 1 does row and one does column they have logic 5v inputs that can be switches via push switches and have outputs for leds ensoniq where good for reusing tech on thewre synths as they were already set up with the parts it was not until nec stop production on the eps/asr fip vfd panel that they went to lcd
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 7:39 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
I would be interested in the contents of the ROM part of the 6500/11 as well – so that the display processor can be properly emulated. I'm also more than willing to pitch in for a donation to make this happen!
Best wishes,
// Christian
On 6 Sep 2012, at 19:34, jammie wrote:
i have sent a message to the guru
to see with a donation and a chip if they could
decap our mask rom and read the code into a bin files for us so we can write new 6500 chips with eproms which are still available to buy making it possible to extend the life of these
instruments
----- Original Message -----
From: jammie
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 7:15 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
thats a neat way of doing it
i have some spare broken chips
you can get ones with flash rom socket on that you install a rom on
these were use for debugging your code before you commited to mask
you can still get these chips
so being able to read the code data would give us a bin file to write new chips
finding some one todo it for use is the thing
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 6:47 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 6:14 PM, "jammie" <jammie.emma@...> wrote:
you cant as there masked you cant read them
Not directly, no - but the decapping is all about exposing the chip itself, and directly reading the masked data, optically. That's what's described at the link that I included, and is used specifically for chips such as the 6500/11 where there's non-directly-readable ROM attached to a microcontroller or similar.
Best wishes,
// Christian
already tried that
ensoniq were good at keeping there stuff secret
as emu use the same chips in the emax 1/2 and e3
but epr can still get the chips with the correct code burned into them
same cpu chip but different prom code
----- Original Message -----
From: Christian Brunschen
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 5:40 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html
Best wishes,
// Christian
On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@blueyonder.co.uk> wrote:
you could change many parts to find out its not that that was broken
you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see
what cycles and voltages and timmings are supposed to happen
and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data
and the problem is its not available
we have had to do it the brut force method with a logic anyliser and recording all the functions
and then copying them onto a fpga logic circuit
its alot of work and we are still in the design phase of the project with this new interface chip
as it is needed to keep alive lots of ensoniq synths
as in the past i have had to put to pastures several metal case esq1 becuase of this chip
you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts
as you could be changing lots of parts for nothing and it might still not work
----- Original Message -----
From: Daeron
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Thursday, September 06, 2012 2:48 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
Yes! i change the power supply thinking that was the problem the but it was not!
Daeron...
----------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 8:37:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote:
Dear Christian!
thanks for you support! it's a very complete information, i will try to check every chip separately!
Hi Daeron,
from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue?
Daeron...
// Christian
--------------------------------------------------------------
De: Christian Brunschen <cb@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 7:10:19
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote:
Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg
As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:
4 * TL4810A to drive the choice of segments; and
2 * TL5812 to drive the columns.
Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).
The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.
The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.
In order to draw a complete screenful, I believe the display board does the following.
The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.
At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.
This means that the display will light up precisely those selected segments in column 0.
Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.
Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.
Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:
http://www.ebay.co.uk/itm/120922031767
http://www.ebay.co.uk/itm/110886748416
(the TL4810BN is an improved version of the TL4810A).
Best wishes,
// Christian Brunschen
please sorry for my bad english is not my native language!
Daeron...
------------------------------------------------------------
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Domingo, 2 de septiembre, 2012 14:52:01
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
the fip controller chips are fualty
its a common problem on the asr10
and the esq1 sq80
so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display
and you cant get the chips any more i know i have tried as i fix these all the time
we are working on an fpga design to replace but still in the designing and testing phase
----- Original Message -----
From: STEPHEN PRATT
To: Ensoniq-VFX-SD@yahoogroups.com
Sent: Sunday, September 02, 2012 8:21 PM
Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
How old is the backup battery?
On Sep 2, 2012, at 2:58 PM, Daeron wrote:
Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display!
like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp2012-09-07 by Daeron
yes, you are quite right, I need to check part by part to find the real problem!
Daeron...
________________________________
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 11:34:19
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
you could change many parts to find out its not
that that was broken
you need a logic anyliser to see whats wrong with
cpu and logic chips and the data sheet so you can see
what cycles and voltages and timmings are supposed
to happen
and getting the data sheet for the 6500 which has a
prom on it with ensoniq specific code for the job it performs so you would also
need this data
and the problem is its not available
we have had to do it the brut force method with a
logic anyliser and recording all the functions
and then copying them onto a fpga logic
circuit
its alot of work and we are still in the design
phase of the project with this new interface chip
as it is needed to keep alive lots of ensoniq
synths
as in the past i have had to put to pastures
several metal case esq1 becuase of this chip
you are better of buying that vfd board for the vfx
from syntuar and then you will hve spare parts
as you could be changing lots of parts for nothing
and it might still not work
----- Original Message -----
>
>
>From: Daeron
>To: Ensoniq-VFX-SD@yahoogroups.com
>Sent: Thursday, September 06, 2012 2:48 PM
>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>
>
>Yes! i change the power supply thinking that was the problem the but it was not!
>
>
>
>Daeron...
>
>
>________________________________
> De: Christian Brunschen <cb@...>
>Para: Ensoniq-VFX-SD@yahoogroups.com
>Enviado: Jueves, 6 de septiembre, 2012 8:37:01
>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>
>
>
>On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@yahoo.com.mx> wrote:
>
>Dear Christian!
>>thanks for you support! it's a very complete information, i
will try to check every chip separately!
>>
>
>
>Hi Daeron,
>
>
>from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue?
>
>Daeron...
>
>
>// Christian
>
>
>
>
>>________________________________
>> De: Christian Brunschen <cb@...>
>>Para: Ensoniq-VFX-SD@yahoogroups.com
>>Enviado: Jueves, 6 de septiembre, 2012 7:10:19
>>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>
>>
>>On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote:
>>
>>Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
>>>
>>
>>
>>Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg
>>
>>
>>As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:
>>
>>
>>4 * TL4810A to drive the choice of segments; and
>>2 * TL5812 to drive the columns.
>>
>>
>>Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).
>>
>>
>>The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.
>>
>>
>>The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.
>>
>>
>>In order to draw a complete screenful, I believe the display board does the following.
>>
>>
>>The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.
>>
>>
>>At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.
>>
>>
>>This means that the display will light up precisely those selected segments in column 0.
>>
>>
>>Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.
>>
>>
>>Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.
>>
>>
>>Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:
>>
>>
>> http://www.ebay.co.uk/itm/120922031767
>>
>>
>> http://www.ebay.co.uk/itm/110886748416
>>
>>
>>(the TL4810BN is an improved version of the TL4810A).
>>
>>
>>Best wishes,
>>
>>
>>// Christian Brunschen
>>
>>
>>
>>
>>>
>>> please sorry for my bad english is not my native language!
>>>
>>>Daeron...
>>>
>>>
>>>________________________________
>>> De: jammie <jammie.emma@....uk>
>>>Para: Ensoniq-VFX-SD@yahoogroups.com
>>>Enviado: Domingo, 2 de septiembre, 2012 14:52:01
>>>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>>
>>>
>>>the fip controller chips are fualty
>>>
>>>its a common problem on the
asr10>>> >>>and the esq1 sq80 >>> >>>so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >>> >>>and you cant get the chips any more i know i have tried as i fix these all the time >>> >>>we are working on an fpga design to replace but still in the designing and testing phase >>>----- Original Message ----- >>>>From: STEPHEN PRATT >>>>To: Ensoniq-VFX-SD@yahoogroups.com >>>>Sent: Sunday, September 02, 2012 8:21 PM >>>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>> >>>> >>>>How old is the backup battery? >>>> >>>> >>>>On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>>> >>>> >>>>>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>>>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>>> >>>>> >>>> >>> >>> >>> >>> >> >> >> >> >> > > >
2012-09-07 by Daeron
very interesting!! no! I'll think a bit, I'm audio engineer, I have no experience or training in this type of work but can be a good addition to occupational therapy relive my vfx! Daeron... ________________________________ De: Christian Brunschen <cb@...> Para: Ensoniq-VFX-SD@yahoogroups.com Enviado: Jueves, 6 de septiembre, 2012 11:40:25 Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html Best wishes, // Christian On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@...> wrote:
> > >you could change many parts to find out its not that that was broken > >you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see > >what cycles and voltages and timmings are supposed to happen > >and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data > >and the problem is its not available > >we have had to do it the brut force method with a logic anyliser and recording all the functions > >and then copying them onto a fpga logic circuit > >its alot of work and we are still in the design phase of the project with this new interface chip > >as it is needed to keep alive lots of ensoniq synths > >as in the past i have had to put to pastures several metal case esq1 becuase of this chip > >you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts > >as you could be changing lots of parts for nothing and it might still not work >----- Original Message ----- >> >> >>From: Daeron >>To: Ensoniq-VFX-SD@yahoogroups.com >>Sent: Thursday, September 06, 2012 2:48 PM >>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >> >> >>Yes! i change the power supply thinking that was the problem the but it was not! >> >> >> >>Daeron... >> >> >>________________________________ >>De: Christian Brunschen <cb@...> >>Para: Ensoniq-VFX-SD@yahoogroups.com >>Enviado: Jueves, 6 de septiembre, 2012 8:37:01 >>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >> >> >> >>On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote: >> >>Dear Christian! >>>thanks for you support! it's a very complete information, i will try to check every chip separately! >>> >> >> >>Hi Daeron, >> >> >>from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue? >> >>Daeron... >> >> >>// Christian >> >> >> >> >>>________________________________ >>>De: Christian Brunschen <cb@...> >>>Para: Ensoniq-VFX-SD@yahoogroups.com >>>Enviado: Jueves, 6 de septiembre, 2012 7:10:19 >>>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>> >>> >>>On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@...> wrote: >>> >>>Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur! >>>> >>> >>> >>>Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg >>> >>> >>>As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function: >>> >>> >>>4 * TL4810A to drive the choice of segments; and >>>2 * TL5812 to drive the columns. >>> >>> >>>Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins). >>> >>> >>>The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers. >>> >>> >>>The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD. >>> >>> >>>In order to draw a complete screenful, I believe the display board does the following. >>> >>> >>>The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0. >>> >>> >>>At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display. >>> >>> >>>This means that the display will light up precisely those selected segments in column 0. >>> >>> >>>Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on. >>> >>> >>>Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips. >>> >>> >>>Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay: >>> >>> >>> http://www.ebay.co.uk/itm/120922031767 >>> >>> >>> http://www.ebay.co.uk/itm/110886748416 >>> >>> >>>(the TL4810BN is an improved version of the TL4810A). >>> >>> >>>Best wishes, >>> >>> >>>// Christian Brunschen >>> >>> >>> >>> >>>> >>>> please sorry for my bad english is not my native language! >>>> >>>>Daeron... >>>> >>>> >>>>________________________________ >>>>De: jammie <jammie.emma@...> >>>>Para: Ensoniq-VFX-SD@yahoogroups.com >>>>Enviado: Domingo, 2 de septiembre, 2012 14:52:01 >>>>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>> >>>> >>>>the fip controller chips are fualty >>>> >>>>its a common problem on the asr10 >>>> >>>>and the esq1 sq80 >>>> >>>>so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >>>> >>>>and you cant get the chips any more i know i have tried as i fix these all the time >>>> >>>>we are working on an fpga design to replace but still in the designing and testing phase >>>>----- Original Message ----- >>>>>From: STEPHEN PRATT >>>>>To: Ensoniq-VFX-SD@yahoogroups.com >>>>>Sent: Sunday, September 02, 2012 8:21 PM >>>>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>>> >>>>> >>>>>How old is the backup battery? >>>>> >>>>> >>>>>On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>>>> >>>>> >>>>>>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>>>>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>>>> >>>>>> >>>>> >>>> >>>> >>>> >>>> >>> >>> >>> >>> >>> >> >> >> >> >> >> >>
2012-09-07 by Daeron
Surfing in te web i found this:
N° Part 65/11E 6500/11 emulator
http://www.cpu-world.com/info/id/Rockwell-identification.html
Can i use this dip to emulate de functions of 6500/11?
Daeron...
________________________________
De: jammie <jammie.emma@...>
Para: Ensoniq-VFX-SD@yahoogroups.com
Enviado: Jueves, 6 de septiembre, 2012 13:50:20
Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
i can get new vfd displays made with controler
chips built in
which would do away with all the interface chips
but would need the cpu scanner for control
on the asr and eps series they use non masked rom
chip[s
there 2 fip control chips made by nec 1 does row
and one does column
they have logic 5v inputs that can be switches via
push switches and have outputs for leds
ensoniq where good for reusing tech on thewre
synths as they were already set up with the parts
it was not until nec stop production on the eps/asr
fip vfd panel that they went to lcd
----- Original Message -----
>From: Christian Brunschen
>To: Ensoniq-VFX-SD@yahoogroups.com
>Sent: Thursday, September 06, 2012 7:39 PM
>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>
>
>I would be interested in the contents of the ROM part of the 6500/11 as well – so that the display processor can be properly emulated. I'm also more than willing to pitch in for a donation to make this happen!
>
>
>Best wishes,
>
>
>// Christian
>
>
>On 6 Sep 2012, at 19:34, jammie wrote:
>
>
>>
>>
>>i have sent a message to the guru
>>
>>to see with a donation and a chip if they could
>>
>>decap our mask rom and read the code into a bin files for us so we can write new 6500 chips with eproms which are still available to buy making it possible to extend the life of these
>>instruments
>>----- Original Message -----
>>>From: jammie
>>>To: Ensoniq-VFX-SD@yahoogroups.com
>>>Sent: Thursday, September 06, 2012 7:15 PM
>>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>>
>>>
>>>
>>>thats a neat way of doing it
>>>
>>>i have some spare broken chips
>>>
>>>you can get ones with flash rom socket on that you install a rom on
>>>
>>>these were use for debugging your code before you commited to mask
>>>
>>>you can still get these chips
>>>
>>>so being able to read the code data would give us a bin file to write new chips
>>>
>>>finding some one todo it for use is the thing
>>>----- Original Message -----
>>>>From: Christian Brunschen
>>>>To: Ensoniq-VFX-SD@yahoogroups.com
>>>>Sent: Thursday, September 06, 2012 6:47 PM
>>>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>>>
>>>>
>>>>
>>>>
>>>>On Sep 6, 2012, at 6:14 PM, "jammie" <jammie.emma@...> wrote:
>>>>
>>>>
>>>>>
>>>>>you cant as there masked you cant read them
>>>>
>>>>
>>>>Not directly, no - but the decapping is all about exposing the chip itself, and directly reading the masked data, optically. That's what's described at the link that I included, and is used specifically for chips such as the 6500/11 where there's non-directly-readable ROM attached to a microcontroller or similar.
>>>>
>>>>
>>>>Best wishes,
>>>>
>>>>
>>>>// Christian
>>>>
>>>>already tried that
>>>>>
>>>>>ensoniq were good at keeping there stuff secret
>>>>>
>>>>>as emu use the same chips in the emax 1/2 and e3
>>>>>
>>>>>but epr can still get the chips with the correct code burned into them
>>>>>
>>>>>same cpu chip but different prom code
>>>>>----- Original Message -----
>>>>>>From: Christian Brunschen
>>>>>>To: Ensoniq-VFX-SD@yahoogroups.com
>>>>>>Sent: Thursday, September 06, 2012 5:40 PM
>>>>>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>>>>>
>>>>>>
>>>>>>Have you considered trying to get the ROM contents of the 6500/11 through decapping – carefully removing the casing of the chip and taking high-resolution pictures of the ROM and read it that way? http://guru.mameworld.info/decap/index.html
>>>>>>
>>>>>>
>>>>>>Best wishes,
>>>>>>
>>>>>>
>>>>>>// Christian
>>>>>>
>>>>>>
>>>>>>On Sep 6, 2012, at 5:34 PM, "jammie" <jammie.emma@...> wrote:
>>>>>>
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>you could change many parts to find out its not that that was broken
>>>>>>>
>>>>>>>you need a logic anyliser to see whats wrong with cpu and logic chips and the data sheet so you can see
>>>>>>>
>>>>>>>what cycles and voltages and timmings are supposed to happen
>>>>>>>
>>>>>>>and getting the data sheet for the 6500 which has a prom on it with ensoniq specific code for the job it performs so you would also need this data
>>>>>>>
>>>>>>>and the problem is its not available
>>>>>>>
>>>>>>>we have had to do it the brut force method with a logic anyliser and recording all the functions
>>>>>>>
>>>>>>>and then copying them onto a fpga logic circuit
>>>>>>>
>>>>>>>its alot of work and we are still in the design phase of the project with this new interface chip
>>>>>>>
>>>>>>>as it is needed to keep alive lots of ensoniq synths
>>>>>>>
>>>>>>>as in the past i have had to put to pastures several metal case esq1 becuase of this chip
>>>>>>>
>>>>>>>you are better of buying that vfd board for the vfx from syntuar and then you will hve spare parts
>>>>>>>
>>>>>>>as you could be changing lots of parts for nothing and it might still not work
>>>>>>>----- Original Message -----
>>>>>>>>
>>>>>>>>
>>>>>>>>From: Daeron
>>>>>>>>To: Ensoniq-VFX-SD@yahoogroups.com
>>>>>>>>Sent: Thursday, September 06, 2012 2:48 PM
>>>>>>>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>Yes! i change the power supply thinking that was the problem the but it was not!
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>Daeron...
>>>>>>>>
>>>>>>>>
>>>>>>>>________________________________
>>>>>>>> De: Christian Brunschen <cb@...>
>>>>>>>>Para: Ensoniq-VFX-SD@yahoogroups.com
>>>>>>>>Enviado: Jueves, 6 de septiembre, 2012 8:37:01
>>>>>>>>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>On Sep 6, 2012, at 2:34 PM, Daeron <daeron_elf@...> wrote:
>>>>>>>>
>>>>>>>>Dear Christian!
>>>>>>>>>thanks for you support! it's a very complete
information, i will try to check every chip
separately!
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>Hi Daeron,
>>>>>>>>
>>>>>>>>
>>>>>>>>from the video you showed, there's a brief flash of something on the display before it all goes blank; that's not really the kind of problem that I think has to do with any one of the driver chips being bad, alas. I think that as has been said elsewhere in this thread, it may be the microcontroller. Possibly, though, it might be a power-related issue?
>>>>>>>>
>>>>>>>>Daeron...
>>>>>>>>
>>>>>>>>
>>>>>>>>// Christian
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>>________________________________
>>>>>>>>> De: Christian Brunschen <cb@...>
>>>>>>>>>Para: Ensoniq-VFX-SD@yahoogroups.com
>>>>>>>>>Enviado: Jueves, 6 de septiembre, 2012 7:10:19
>>>>>>>>>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work!
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>On Sep 2, 2012, at 9:00 PM, Daeron <daeron_elf@yahoo.com.mx> wrote:
>>>>>>>>>
>>>>>>>>>Oh! thanks a lot for your support! somebody know the part number of the controller chip? i found this: Display driver integrated circuit chip, TL4810BN on syntaur!
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>Actually, the display board on the VFX-series of boards uses two different driver chips to drive the VFD (Vacuum Fluorescent Display). In that respect it is similar to the ESQ1 - whose display board schematic is here: http://memi.de/~buchty/ensoniq/schematics/esq1/esq1-display.jpg
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>As on the VFX / VFX--SD / SD-1, there are two different chips, both with similar function:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>4 * TL4810A to drive the choice of segments; and
>>>>>>>>>2 * TL5812 to drive the columns.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>Basically, the VFD works by lighting up those segments that are addressed by the combination of the selected column (40 columns, one pin for each column => 40 pins) and the selected set of segments (2 rows of characters with 14 segments per character => 28 pins).
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>The driving chips are shift registers, into which data are written sequentially, and then presented in parallel. The TL4810A chips are 10-bit shift registers, and the TL5812 chips are 20-bit shift registers.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>The two TL5812:s are arranged sequentially to comprise effectively a single, 40-bit shift register, their 40 outputs each connected to one of the 40 'column' pins on the VFD; the 4 TL4810A:s are separate, each connected to separate input pins from the 6500 processor, and each having 7 of its outputs connected to 7 of the 'segment' driving pins on the VFD.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>In order to draw a complete screenful, I believe the display board does the following.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>The display board iterates through each column on the board. It does this by shifting a single '1' into the 40-bit shift register comprised of the 2 TL5812:s. At the beginning of displaying a screenful, we thus have a single '1' and 39 '0's present on the column-driving pins of the VFD, thus effectively selecting column 0.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>At the same time, it shifts 4 sets of 7 bits, one into each of the TL4810A:s, thus specifying which 4*7 = 28 segments should be lit in the 0:th column of the display.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>This means that the display will light up precisely those selected segments in column 0.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>Then a '0' is shifted into the 'column' shift register, advancing the '1' to select column 1; and a new set of 7 bits per register are shifted into the 4 TL4810A:s, to specify the set of segments lit in that column, and so on.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>Troubleshooting-wise, this basically means that if you have symptoms where the left or right half of the display is messed up but the other (right / left) half is OK, it's likely a problem with one of the TL5812 chips. If you have problems with some of the segments in all characters in one row, that indicates an issue with one (or more) of the TL4810A chips.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>Intriguingly enough, I've found both TL5812:s and TL4810:s on eBay:
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> http://www.ebay.co.uk/itm/120922031767
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> http://www.ebay.co.uk/itm/110886748416
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>(the TL4810BN is an improved version of the TL4810A).
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>Best wishes,
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>// Christian Brunschen
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> please sorry for my bad english is not my native language!
>>>>>>>>>>
>>>>>>>>>>Daeron...
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>________________________________
>>>>>>>>>> De: jammie <jammie.emma@...>
>>>>>>>>>>Para: Ensoniq-VFX-SD@yahoogroups.com
>>>>>>>>>>Enviado: Domingo, 2 de septiembre, 2012 14:52:01
>>>>>>>>>>Asunto: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no
work!>>>>>>>>>> >>>>>>>>>> >>>>>>>>>>the fip controller chips are fualty >>>>>>>>>> >>>>>>>>>>its a common problem on the asr10 >>>>>>>>>> >>>>>>>>>>and the esq1 sq80 >>>>>>>>>> >>>>>>>>>>so its no suprize that the vfx has the same fualt as the esq1 and sq80 vfx sd and the ts10 all use the same display >>>>>>>>>> >>>>>>>>>>and you cant get the chips any more i know i have tried as i fix these all the time >>>>>>>>>> >>>>>>>>>>we are working on an fpga design to replace but still in the designing and testing phase >>>>>>>>>>----- Original Message ----- >>>>>>>>>>>From: STEPHEN PRATT >>>>>>>>>>>To: Ensoniq-VFX-SD@yahoogroups.com >>>>>>>>>>>Sent: Sunday, September 02, 2012 8:21 PM >>>>>>>>>>>Subject: Re: [Ensoniq-VFX-SD] Ensonix VFX-SD no work! >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>>How old is the backup battery? >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>>On Sep 2, 2012, at 2:58 PM, Daeron wrote: >>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>>>>Hi! some body help me! my vfx-sd don't work any more, i change the power supply but nothing! i push the power on and just a little flash on the display! >>>>>>>>>>>>like this: http://www.youtube.com/watch?v=dNBW3DluHj0&feature=plcp >>>>>>>>>>>> >>>>>>>>>>>> >>>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> >>>> >>>> >>>> >>> >>> >>> >>> >