To give you some kind of idea, for the IBM PC family, I have recorded some motherboard BIOS ROM failures at here].
That page excludes Cassette BASIC...
I am an IT professional of some 30 years experience. I started with CP/M and Apple IIs but have also worked on Data General and DEC Mini computers. I have a diploma in electronic engineering. I currently collect and restore vintage, CP/M, Apple, IBM and Mac computers. I am in the process of building 2 Apple 1 clones, with period correct components.
Location:
Adelaide, South Australia
Interests:
Collecting and resporing vintage computers, Apple II, Mac, CP/M, S100, IBM
Occupation:
IT Manager, Haigh's Chocolates: http://www.haighschocolates.com