Hello.
I found a 32k EPROM in in a box of junk. I have no idea where the EPROM came from. I built a circuit using an Arduino Nano and 4x 4-bit binary counters (to set the address bits) and dumped the EPROM. I'm certain that it does not contain 6502 instructions, as the top-most addresses do not contain anything like normal 6502 IRQ/NMI/RESET vectors. It might be z-80, but I've not looked at Z-80 in decades and forgot it. Anyway, I thought that some here might find it fun to try to figure out what this EPROM is for.
https://www.ecoligames.com/~djenkins/Pr ... m-dump.bin
https://www.ecoligames.com/~djenkins/Pr ... m-dump.txt
I found a 32k EPROM in in a box of junk. I have no idea where the EPROM came from. I built a circuit using an Arduino Nano and 4x 4-bit binary counters (to set the address bits) and dumped the EPROM. I'm certain that it does not contain 6502 instructions, as the top-most addresses do not contain anything like normal 6502 IRQ/NMI/RESET vectors. It might be z-80, but I've not looked at Z-80 in decades and forgot it. Anyway, I thought that some here might find it fun to try to figure out what this EPROM is for.
https://www.ecoligames.com/~djenkins/Pr ... m-dump.bin
https://www.ecoligames.com/~djenkins/Pr ... m-dump.txt