DOS ain't dead

Intel mulls cutting ties to 16 and 32-bit support (Announce)

posted by tkchia , 28.05.2023, 15:27

Hello marcov,

> > I wonder why Intel did not decide to do the "more obvious" thing, i.e.
> > allow for a 64-bit long mode without virtual memory paging
> > (cr3).

> What would be the benefit ? (for them I mean)

It is likely going to be simpler to set up — if not for Intel, then at least for the firmware writers.

Intel's proposed arrangement seems to be that the firmware writers need to set up some sort of table in firmware which their CPU microcode will have to parse in order to figure out how to run the first x86-64 instruction. None of this looks "simplified" to me in any way.

Also, 64-bit ARM (AArch64) CPUs are perfectly able to simply start up without virtual memory paging.

---
https://gitlab.com/tkchia · https://codeberg.org/tkchia · 😴 "MOV AX,0D500H+CMOS_REG_D+NMI"

Complete thread:

• Intel mulls cutting ties to 16 and 32-bit support - marcov, 25.05.2023, 11:59 (Announce)
  • Intel mulls cutting ties to 16 and 32-bit support - Rugxulo, 27.05.2023, 03:17
    • Intel mulls cutting ties to 16 and 32-bit support - DosWorld, 27.05.2023, 08:18
      • Intel mulls cutting ties to 16 and 32-bit support - tkchia, 27.05.2023, 13:03
        • Intel mulls cutting ties to 16 and 32-bit support - marcov, 28.05.2023, 12:59
          • Intel mulls cutting ties to 16 and 32-bit support - tkchia, 28.05.2023, 15:27
      • Intel mulls cutting ties to 16 and 32-bit support - alexfru, 31.05.2023, 02:22
        • kill AVX instead - Rugxulo, 01.06.2023, 03:07
          • kill AVX instead - marcov, 01.06.2023, 13:36
        • Intel mulls cutting ties to 16 and 32-bit support - RayeR, 06.06.2023, 13:48
    • Intel mulls cutting ties to 16 and 32-bit support - marcov, 28.05.2023, 12:58
  • Intel mulls cutting ties to 16 and 32-bit support - RayeR, 27.05.2023, 13:10
    • Intel mulls cutting ties to 16 and 32-bit support - KormaX, 29.05.2023, 23:52
      • Intel mulls cutting ties to 16 and 32-bit support - RayeR, 30.05.2023, 01:42
        • Intel's X86-S ISA specification document - RayeR, 06.06.2023, 07:25
  • Intel mulls cutting ties to 16 and 32-bit support - glennmcc, 30.05.2023, 22:19