First post, by jewesta
Hey everyone!
I have a few Amstrad PC 1512 / 1640 motherboards and always wanted to dump the BIOS directly from the chips. I know that I can use DEBUG for that and I've already managed to do so. But I want to try and read the images off the chips.
Simple question: Is it possible to do this with my el cheapo TL866 II Plus EEPROM reader? And if so, which type of ROM is compatible / do I have to select? I have tried a few without success ("bad pins", although perfectly OK when in the system) and am reluctant to just do trial and error.
According to the technical documentation here (1512) and here (1640) it should be 8k BIOS chips (Hi / Lo configuration), so a total of 16k. The Amstrads also have a third chip, the character ROM. All three chips are in a DIP 28 package.
I can see no helpful info on the chips, only Amstrad part numbers. There is no info on the back of the chips either.
Thanks!
Jens