Hi,
The PCB from the Wilf Rigter project :
https://quix.us/timex/rigter/Shades@20o ... otech.html
Wiring diagram:
http://abandon.pcbs.free.fr/wilfrigter/ROM_Patcher/
Have fun.
ROM Patcher from Wilf Rigter (2005)
ROM Patcher from Wilf Rigter (2005)
Xavier ...on the Facebook groupe : "Zx81 France"(fr)