Hi,
I know that the BIOS code is very well documented in the Technical Reference. But is has some issues:
- no very legible
- not easy to search
- no hyperlinks
so, I started to disassemble it, adding the original comments.
And I also started documenting the "test code" (the one that appears when you press ctrl+alt+ins).
This is still WIP, and I'll keep adding comments in the following weeks/months.
It is here:
https://github.com/ricardoquesada/ibm-pcjr-bios