If you've hacked up a rom and want to play the new version on a console instead of an emulator, you can write the data to a couple of EPROM chips and then replace the chips on a cartridge. However, the EPROM chips have slightly different configs than the original chips which means you need to bend back some of the pins or sodder together some of the points. So, my question is how do you figure out where the new EPROM pinouts should map to?
For specifics, I'm trying to do this for the game Tecmo Super Bowl which is composed of a 256k PRG and 128k CHR rom and the game itself uses a MMC3 mapper. (This is also the same for Super Mario Bros. 3)
Any help would be appreciated along the lines of pointing me in the right direction to figure it out or even point by point instructions if you're feeling saucy. BTW, in order to be more specific, let's say I'm using a 27c020 and 27c010 EPROM. (that's 256k and 128k, respectively)