I have 1 spare 27C512 sitting around. useful at all?

[Bernkastel_Kues]

1: while I'm waiting for a shipment of chips to come in I was wondering if anyone knew of any NES game I could make using just 1 27C512? any games where only the PRG is changed any not the CHR? Just something to do to pass the time pretty much.

2: If a game is a rom hack, is it possible you don't need to change the CHR if no new graphics are added?

3: one more question, if the PRG or CHR is small enough, for any board, is it possible to use a 27c512 for it instead of the 32pin chips? I have only ever seen instructions on how to wire 32pin chips. Example, Eggerland is PRG: 128K and CHR 32K but I will only find information on how to wire up the CHR as a 32pin. does this mean I need to always use on of my 27c040 on it as those are all I order in the 32pins, so far?

[tepples]

1: while I'm waiting for a shipment of chips to come in I was wondering if anyone knew of any NES game I could make using just 1 27C512?

With one 27C512 and an UNROM board, you could make Solar Wars (UNROM version), Super PakPak, Driar (UNROM version), or 240p Test Suite. With one 27C512, an UNROM board, and a small amount of ROM hacking, you could make RHDE, Zap Ruder, Thwaite, Concentration Room, DABG, Sliding Blaster, or essentially any other NES game that's 40K or smaller.

2: If a game is a rom hack, is it possible you don't need to change the CHR if no new graphics are added?

If you reproduce a game that uses CHR RAM (a 6264 SRAM in the CHR socket), all the graphics are in the PRG ROM.

3: one more question, if the PRG or CHR is small enough, for any board, is it possible to use a 27c512 for it instead of the 32pin chips?

Yes, provided you wire the correct signals to the correct pins.

[Bernkastel_Kues]

1: while I'm waiting for a shipment of chips to come in I was wondering if anyone knew of any NES game I could make using just 1 27C512?

With one 27C512 and an UNROM board, you could make Solar Wars (UNROM version), Super PakPak, Driar (UNROM version), or 240p Test Suite. With one 27C512, an UNROM board, and a small amount of ROM hacking, you could make RHDE, Zap Ruder, Thwaite, Concentration Room, DABG, Sliding Blaster, or essentially any other NES game that's 40K or smaller.

2: If a game is a rom hack, is it possible you don't need to change the CHR if no new graphics are added?

If you reproduce a game that uses CHR RAM (a 6264 SRAM in the CHR socket), all the graphics are in the PRG ROM.

3: one more question, if the PRG or CHR is small enough, for any board, is it possible to use a 27c512 for it instead of the 32pin chips?

Yes, provided you wire the correct signals to the correct pins.

Thanks for the information! I'll probably make one of those UNROM games you linked. Konami UNROM Boards are so nice to desolder compared to the nintendo boards... I always have issues with desoldering the ground pin on nintendo boards. thanks again!