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@dav1dbone
3 ай бұрын
Regarding the 01w, I've had to shelve it for the time being. I repaired some traces leading to the dram memory, using the sequencer would cause it to crash, unfortunately it would appear I have inadvertently applied too much heat for too long to one of the pins(data sheet has strict tolerances, I know I was over), now the board won't boot, I get fatal exception error. Trying to source these drams is proving tricky, (they're 40 pin ZIPs) Utsource will ship them, for a price. I was considering sketching up a conversion PCB to use standard simms(exact same ic though different pin arrangement), and soldering pin headers onto either side of this PCB (beer mat calculation, that this will fit the Zip profile?) Also if it worked, could offer the possibility to experiment with larger memory sizes, highly doubtful anything beyond original size would work? Work in progress 😁
@TheMusicTechGuyUK
2 ай бұрын
Hi @dav1dbone Sounds like a really interesting project. In terms of putting bigger memory into the keyboard, I suspect that the firmware is designed to only address a certain memory ranges. But I would be interested to understand how far you get. Jon
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