nesdev.org

so I have a GQ-4X and it has worked great so far. I have done about 40 used eproms so far and they work great. just the other day I got 24 new FM27c040Q in (B0206AB FM27c040Q 90) and they blank check alright, they write with no errors but always fail verification almost instantly. I have tried using...

So I want to make a Little Magic which is 512k. can I just swapbin it and burn or do I need to somehow double it since it's not 1MB? I used SNES ROM Utility and it gives a 512kb .bin file

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 UN...

for NES I use a program that will automatically mirror and prepare multiple files (one CHR and PRG if there are two). Does such a thing exist for master system? I ask because I have an order of 27c512 on the way and I'm wondering if the are possible to use at all with the basic master system boards ...

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 ne...