Hopefully I can contribute something to the community.
My current goal is to re-design the "store board" to use a 32KB SRAM instead of the two banks of 16KB DRAM.
I think this is the last remaining fault in my machine.
Failing ... or succeeding ... that, I'd like to try at a 64KB external SRAM board.
{Fri 15-Sept-2023}
Sent SRAM Store Board prototype for fabrication
My YouTube video playlist - note, most are my very early videos so probably a bit rough:
https://www.youtube.com/playlist?list=PL5pwokf56wMKPswNvQZJsGPXETtgRD57M