DOS ain't dead

8086 rules (Miscellaneous)

posted by bretjohn  , Rio Rancho, NM, 21.02.2024, 17:40

> This was not without its limitations. If an application utilized or relied
> on any of the techniques below, it would not run:
>
> ...
> Use of BIOS functions, due to the BIOS interrupts being reserved by
> Intel[31]

I would classify "Would not run" as a vast overstatement. Specifically regarding the BIOS functions, that is not actually a DOS problem -- it is a BIOS problem. And even then, the only BIOS interrupt problem I've come across that has any practical effect is INT 05, which used by both the BIOS PrintScreen function and by the CPU BOUND instruction (which didn't even exist until the 80286).

Complete thread:

• 8086 rules - kerravon, 21.02.2024, 07:24 (Miscellaneous)
  • 8086 rules - Japheth, 21.02.2024, 09:03
    • 8086 rules - Rugxulo, 21.02.2024, 10:38
    • 8086 rules - kerravon, 21.02.2024, 11:02
      • 8086 rules - Ringding, 21.02.2024, 11:56
        • 8086 rules - kerravon, 21.02.2024, 12:06
      • 8086 rules - Japheth, 21.02.2024, 15:16
        • 8086 rules - Ringding, 21.02.2024, 15:24
  • 8086 rules - mceric, 21.02.2024, 11:07
    • 8086 rules - kerravon, 21.02.2024, 12:02
    • 8086 rules - kerravon, 21.02.2024, 13:36
    • 8086 rules - CS writing, lDebugX - ecm, 21.02.2024, 14:57
  • 8086 rules - bretjohn, 21.02.2024, 17:40
    • 8086 rules - kerravon, 21.02.2024, 23:35