DOS ain't dead

TripleFault [4] | 80686 -> 80486 -> 80386 -> 80286 !?!? (DOSX)

posted by Rugxulo , Usono, 21.08.2007, 03:04

> Well, had to apply 2 cracks before it "worked" in NTVMD ... first cracked
> off the "TRUE" DOS test -> MTRR's not supported !!! Why ? INT
> $31/$400 returns 3 in NTVDM (!!!) ... MEVDM used to return 4 ... and
> DOS/HDPMI correctly returns 6 of course ... and next generation
> Vi$ta NTVDM MS-DOG subsystem probably reports itself as 80286 ...
> to be verified ASAP

int 2Fh,1687h returns CL=4 on WinXP (though I did test int 31h, 400h in DOS/32a with CC386's inline asm, but CX and DX seem to be mostly?? filled with garbage, so I'm skeptical that CL=3 is really an accurate result).

I've heard of people running Win95 on a 486, but XP?? (Doubt it, probably implemented as such for some weird compatibility reason.)

Complete thread:

• TripleFault - DOS386, 13.08.2007, 06:46 (DOSX)
  • TripleFault - Japheth, 13.08.2007, 08:24
    • TripleFault [2] - DOS386, 13.08.2007, 08:37
      • TripleFault [2] - Japheth, 13.08.2007, 11:41
        • TripleFault [3] - DOS386, 16.08.2007, 10:09
          • TripleFault [3] - Japheth, 17.08.2007, 10:56
            • TripleFault [4] | 80686 -> 80486 -> 80386 -> 80286 !?!? - DOS386, 19.08.2007, 07:36
              • TripleFault [4] | 80686 -> 80486 -> 80386 -> 80286 !?!? - Rugxulo, 21.08.2007, 03:04
                • TripleFault [4] | 80686 -> 80486 -> 80386 -> 80286 !?!? - Matjaz, 21.08.2007, 11:07
                  • TripleFault [4] | 80686 -> 80486 -> 80386 -> 80286 !?!? - Rugxulo, 22.08.2007, 00:19
                    • TripleFault [5] | 80686 -> 80486 -> 80386 -> 80286 !?!? - DOS386, 25.08.2007, 02:31
                      • TripleFault [5] | 80686 -> 80486 -> 80386 -> 80286 !?!? - Rugxulo, 25.08.2007, 03:15
            • TripleFault [6] VERxx's NOP - DOS386, 31.08.2007, 07:09
              • TripleFault [7] VERxx's NOP | Crash via Ports - DOS386, 02.09.2007, 12:00