The roms should be the same AMD if you could that would be a huge help. Its the eprom on the keyboard PCB (keytronic)
I just tried replacing the P8035L controller on the pcb and now The only difference is the caps lock light stays on. Pressing keys does nothing.
The long and short is the owner of this machine put the keyboard ribbon cable in backwards and fried a couple passives(that's all we saw originally) I have replaced a couple bad TTL logic chip and I still cant get the board going. Everything seems fine, only thing left is the Eprom.