got the code of an esq1
its simalar but there are extra buttons on the
vfx/sd
so the code will be different
we need a dead chip so that we can melt the
protection surface of to reveal the mask rom so that the binary can be
written
----- Original Message -----From: Christian BrunschenSent: Tuesday, June 18, 2013 10:40 AMSubject: Re: [Ensoniq-VFX-SD] SD-1 Display Freaking Out.. Buttons don't respond
On 18 Jun 2013, at 01:41, jammie wrote:
button and vfd cpu scanner chip is faultythis deals with all button presses which are triggered as logic signals by the cputhis then tells the vfd chips what to write on the screenits a common problem they just failno more chips availablethe esq1 sq80 vfx all use this cpu scanner chipas does emuthe chips are 65001 8 bit logic micro with mask rom with specific codeIt's a 6501/11, IIRC
can get code but cant get the eeprom versions of the chip any moreDid you manage to get the code off one of these chips?By the way, there's a control panel board for a VFX for sale on eBay:And it does seem to have the chip on it (furthest to the right in the pictures). However, the VFX doesn't have all of the buttons that you'd find on a VFX-SD or SD-1 panel, so there's no guarantee that the code on the chip would be the same :/
as its a no longer made chipas i was looking at the same for the loads of esq1 i get in for servicethe next option now is create an avr or fpga emulation chipThe core of the chip is essentially a 6502, with a couple of extra bit-twiddling instructions if I understand correctly, so emulating it should not present a huge hurdle.Best wishes,// Christian
----- Original Message -----From: ;Clayton LewisSent: Monday, June 17, 2013 10:03 PMSubject: [Ensoniq-VFX-SD] SD-1 Display Freaking Out.. Buttons don't respondHi all
After a weekend of shows, my SD-1 start freaking out on me. I turned it on and the display just starts to flash and the letters and numbers are just putting on a light snow… flickering on and on. And on top of that the buttons don't respond to anything now. When it first happened, I was able to continue to use the MIDI (I use my SD1 as a controller for my computer) but now with the buttons not working… it just doesn't want to do anything. Attached is a screenshot
Anyone see this.
I just had the battery changed last year.
THANKS