Ice Man wrote:
Did you use FamiROM to split the ROM properly into CHR and PRG (eventually expanded them) to be used on a 27c2001?
Mario in some usual day uses 256kb CHR and 256kb PRG.
Some EPROMs need PGM (Pin 31) set to low or high depending on the state. Try connecting it to GND or 5V.
Pin 1 (VPP) can be left untouched and unconnected as it is only used for programming.
Also EPROM Pin 30 of CHR has to be connected to pin 1 of CHR socket anyway.
thanks for the help! so when you say pin 31 set to low or high is that on both prg and chr? i used famirom to split the rom and fill.