I remember those books. They were all helpful in teaching assembly, bios, and general pc programming like serial ports, etc. None of them really helped with 38

I remember those books. They were all helpful in teaching assembly, bios, and general pc programming like serial ports, etc. None of them really helped with 386 protected mode programming. GDT, LDT, selectors and descriptors, paging, etc. For that you really needed the official docs. I printed the 300+ page programmer's guide in the school lab which they were not too happy about.