ive done one sucessful rewire of an unrom cart but the second attempt came up with a glitch, i tried to put ghosts and goblins on a nes unrom cart (robowarrior i think it was) anyway, the cart starts up but the graphics are corrupted, what would cause this? the game plays but the graphics are all jumbled, could it be the ram chip on the cart or a faulty eprom chip, that i used to program ghost and goblins onto? i also tried to put galaga onto a hotwired nrom cart and that had the same problem/sorta, the game plays fine but the black spots of space in the background are taken up by 0's instead, the stars still move in the backgroundand the ship and mosters are visable if they move, else they become 0's in the screen of 0's. ive wired the cart correctly on both carts, but there is corrupted graphics, are both carts suffering faulty eproms? could static from myself have caused damage to the eproms? the pc roms i took them from work under nesticle, and i used tnines to split them to headers/footers/chr/prg could it be tnines? i split it a few times to make sure but it came out the same, and waiting 20 odd mins at a time to erase the eprom and then prog again and still it came up with errors, i cleaned all the contacts on the board, the only difference in the two unrom carts is i used a socket to be able to remove the eprom if things didnt go right, could the socket be the problem?
to many possiblities hmmm