KenEG
Experienced Member
This seller http://myworld.ebay.com/uniquesoftware has a supply of BIOS chips for PC10/20/30/&40 Commodore computers. I just bought a 4.41 (latest I think) chip for my Commodore Colt (PC20-III). I had just bought an EPROM burner and was actually looking for blank EPROMs when I found this. Does anyone here know what type of EPROM the Colt uses and where to purchase? I do still want to learn how to make my own BIOS chips.