I'm working on a bankswitch card that supports multigames.
I first made a normal 4k multicard using a 27C256 that holds 8 games, for testing purposes. Easy to make, and it worked fine...
Because I have my own programmer, but not an UV eraser, I wanted to use a 29F010 EEprom that can be electrically erased. The pinout of this is (almost) the same as a 27C010. So I copied a few ROM's together and programmed the EEprom, but for some reason that didn't work on my Atari 2600. I used my programmer to read back the ROM file out of the chip, and tested it in Stella (32 in 1). That worked fine, so there doesn't seem to be anything wrong with programmed chip.
Does anyone here have any experience using EEproms for DIY cartridges or mulitgame card, and what is the difference between using a EEprom and a normal Eprom (because the normal Eprom is working fine).
Many thanks !!
Edited by SkalTura, Sat Sep 22, 2012 12:57 AM.