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2010-01-03 by bjonnh
I just erased the eeprom of my BCR2000. I'm working on a way to do a custom made firmware for those boxes. So if someone want's to contribute for it, i'm looking for: 1 ) A dead unit (or only the EEPROM) and/or 2) A dump of the EEPROM of a working unit. Thanks for your help.
2010-01-06 by Martin Klang
Still looking? I'm about to open up my BCR2000 to see if I can fix it - it stops sending midi after being switched on for a few minutes. How do I dump the EEPROM contents? I've got an arduino, zif sockets, and other bits and pieces so if it's an I2C eeprom I should be able to read it. What type of chip is it and how do I identify it? cheers, /m
On 3 Jan 2010, at 00:41, bjonnh wrote: > I just erased the eeprom of my BCR2000. > > I'm working on a way to do a custom made firmware for those boxes. > > So if someone want's to contribute for it, i'm looking for: > > > 1 ) A dead unit (or only the EEPROM) > > and/or > > 2) A dump of the EEPROM of a working unit. > > > > Thanks for your help. >
2010-01-06 by Martin Klang
Alright, so I've identified the EEPROM, SST39SF040, and I've got the datasheet for it. Tho it seems I have to manage 16 address pins and 8 data pins to dump the data, that's going to be pretty difficult without an eeprom reader! Any thoughts? /m
On 6 Jan 2010, at 12:59, Martin Klang wrote: > > Still looking? > > I'm about to open up my BCR2000 to see if I can fix it - > it stops sending midi after being switched on for a few minutes. > > How do I dump the EEPROM contents? > I've got an arduino, zif sockets, and other bits and pieces so if it's an I2C eeprom I should be able to read it. > What type of chip is it and how do I identify it? > > cheers, > > /m > > On 3 Jan 2010, at 00:41, bjonnh wrote: > >> I just erased the eeprom of my BCR2000. >> >> I'm working on a way to do a custom made firmware for those boxes. >> >> So if someone want's to contribute for it, i'm looking for: >> >> >> 1 ) A dead unit (or only the EEPROM) >> >> and/or >> >> 2) A dump of the EEPROM of a working unit. >> >> >> >> Thanks for your help. >> > > > > ------------------------------------ > > Yahoo! Groups Links > > >
2010-01-06 by Bob S.
----- Original Message -----From: Martin KlangSent: Wednesday, January 06, 2010 5:29 AMSubject: Re: [bc2000] Looking for a dead BCR2000 or the dump of the EEPROM of a working one (or not)
Alright, so I've identified the EEPROM, SST39SF040, and I've got the datasheet for it.
Tho it seems I have to manage 16 address pins and 8 data pins to dump the data, that's going to be pretty difficult without an eeprom reader!
Any thoughts?
/m
On 6 Jan 2010, at 12:59, Martin Klang wrote:
>
> Still looking?
>
> I'm about to open up my BCR2000 to see if I can fix it -
>; it stops sending midi after being switched on for a few minutes.
>
> How do I dump the EEPROM contents?
> I've got an arduino, zif sockets, and other bits and pieces so if it's an I2C eeprom I should be able to read it.
> What type of chip is it and how do I identify it?
>
> cheers,
>
> /m
>
> On 3 Jan 2010, at 00:41, bjonnh wrote:
>
>> I just erased the eeprom of my BCR2000.
>>
>> I'm working on a way to do a custom made firmware for those boxes.
>>
>> So if someone want's to contribute for it, i'm looking for:
>>
>>
>> 1 ) A dead unit (or only the EEPROM)
>;>
>> and/or
>>
>> 2) A dump of the EEPROM of a working unit.
>>
>>
>>
>> Thanks for your help.
>>
>
>
>
> ------------------------------------
>
> Yahoo! Groups Links
>
>
>
2010-01-16 by bjonnh
--- In bc2000@yahoogroups.com, Martin Klang <mars@...> wrote: > Tho it seems I have to manage 16 address pins and 8 data pins to dump the data, that's going to be pretty difficult without an eeprom reader! > Any thoughts? Just use two shift registers. I've done a controller for my arduino to read and write to my eeprom (and it works) (got to set analog pins as digital). I also got the dump file of a 1.10 version (from someone that wants to remain anonymous). Just got some transmissions problem (some bytes are not correctly written to the chip). So trying to recover these... I think I'm writing too fast for my EMI-unprotected flying cables circuit.
2010-01-16 by bjonnh
--- In bc2000@yahoogroups.com, "Bob S." <tttsystems@...> wrote: > > From my point of view, it's less time, money and effort to buy another BCR2000 for $85 on EBay and part your damaged one out for parts.....I certainly as would others, love to buy some replacement encoders.....at $3 to $5 each, you have made more than the cost of the second BCR2000.... I would prefer reuse them to make an home made midibox :p And 85$ is too much for me. I would prefer to repair it freely. Even if it took me some time :)
2010-01-16 by bjonnh
And now ...... My BCR 2000 Live againnn!!!! I'm really happy to have get this done ! Now I can continue my firmware work. But it seems that people with ARM knowledge didn't visit this forum anymore... So I don't think I will go further than the decoding of it.
2010-01-17 by Martin Klang
On 16 Jan 2010, at 01:19, bjonnh wrote: > And now ...... > My BCR 2000 Live againnn!!!! bjonnh again! <really sorry/> /m