Originally Posted by
steveo
ok so it's a bit confusing but the rom is address scrambled, so when placed into a regular programmer for reading or programming, you don't get the normal bin back.
it's like you see ABCDEF when the bin is read from aldl based software like eehack, but when read with hardware the rom has FCDEBA or something since (im guessing) the address pins aren't traced normally to the processor. this might have been done on purpose.
that means you can't just get an LT1 bin file and split it, and use your programmer to flash them onto the chips. you'd need a clean read from the prom.
the rom images ion gave you would be a good starting point.
i got halfway to figuring out the scrambled addressing them gave up, but i'd love to write a conversion tool for it, that's for sure!