DOS ain't dead - SSE in HDPMI / bug (c/c)

SSE in HDPMI / bug (c/c) (DOSX)

posted by Japheth , Germany (South), 04.01.2008, 11:12

> > HDPMI does it.
>
> Evidence, please :lol3:

HDPMI is so nice it activates this SSE2 bit and leaves it activated even after it has terminated. That's why Rug's lovable program runs ok after one HDPMI program has been launched (VESAMTRR in CONFIG.SYS for example). Without such a run PAQ8o8z.exe just reboots the machine in plain DOS!?

> But seems I found a (critical/criminal) bug:
>
> Additionally, some privileged opcodes are emulated: > - HLT (F4) > - MOV reg,CRx (0F 20 xx) - using ESP for <reg> will not work! > - MOV CRx,reg (0F 22 xx) - using ESP for <reg> will not work!
>
> but
>
> ?CMPCR3 = 1 ;std 1: 1=improves performance by 2-3%> ?EMUMOVREGCRX = 1 ;std 1: emulate mov reg, crX (req. by 32rtm!) > ?EMUMOVCRXREG = 1 ;std 1: emulate mov crX, reg > ?EMUMOVCR0REG = 0 ;std 0: emulate mov cr0, reg > ?EMUMOVREGDRX = 0 ;std 0: emulate mov reg, drX > ?EMUMOVDRXREG = 0 ;std 0: emulate mov drX, reg > ?SUPP32RTM = 1 ;std 1: support int2f, ax=168a, "VIRTUAL SUPPORT" > ?CATCHREBOOT = 1 ;std 1; catch ctrl-alt-delete

Finding something in the source which looks suspicious to you is not a valid bug report. You'll have to provide a test case.

---
MS-DOS forever!

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Complete thread:

SSE in DOS under JEMM386 ?? - Rugxulo, 03.01.2008, 06:54 (DOSX)
- SSE in DOS under JEMM386 ?? - DOS386, 03.01.2008, 08:12
  - SSE in DOS under JEMM386 ?? - Rugxulo, 04.01.2008, 01:03
- SSE in DOS under JEMM386 ?? - Japheth, 03.01.2008, 09:19
  - SSE in DOS under JEMM386 ?? - Rugxulo, 04.01.2008, 01:05
    - SSE in DOS under JEMM386 ?? - Japheth, 04.01.2008, 09:44
      - SSE in HDPMI / bug (c/c) - DOS386, 04.01.2008, 10:20
        SSE in HDPMI / bug (c/c) - Japheth, 04.01.2008, 11:12
        SSE in HDPMI / bug (c/c) - Rugxulo, 04.01.2008, 22:39
      - SSE in DOS under JEMM386 ?? - Rugxulo, 07.01.2008, 14:49
        SSE in DOS under JEMM386 ?? - Japheth, 07.01.2008, 17:42
        SSE in DOS under JEMM386 ?? - Rugxulo, 09.01.2008, 01:23
        SSE in DOS under JEMM386 ?? - Rugxulo, 09.01.2008, 10:46
        SSE in DOS -> Illegal Instruction Exception - DOS386, 10.01.2008, 01:22
        SSE in DOS -> Illegal Instruction Exception - Steve, 10.01.2008, 08:46
        SSE in DOS -> alignment issues - Rugxulo, 10.01.2008, 22:21
        SSE in DOS under JEMM386 ?? - Japheth, 10.01.2008, 17:19
- SSE in pure DOS - Rugxulo, 04.01.2008, 06:09
  - Secure Socket Extremism in DOS | You maybe have a Page Foul - DOS386, 04.01.2008, 07:52
    - SSE in DOS | Page Fault | JEMM386 / HDPMI32 - Rugxulo, 04.01.2008, 22:47
      - SSE in DOS | Page Fault <- YES, your bug | HDPMI32 - DOS386, 05.01.2008, 02:19
        SSE2 in DOS | PAQ8o8z (Jan. 6) - Rugxulo, 06.01.2008, 05:09
        SSE2 in DOS | PAQ8o8z (Jan. 6) - DOS386, 08.01.2008, 02:00
- MS the "only hope"? - Japheth, 04.01.2008, 12:11
  - MS the "only hope"? - RayeR, 04.01.2008, 18:09
    - MS the "only hope"? - Japheth, 04.01.2008, 19:16
      - MS the "only hope"? - RayeR, 04.01.2008, 22:17
      - MS the "only hope"? (Vista DPMI bug: 32 MB max.) - Rugxulo, 04.01.2008, 22:31
        MS the "only hope" ? NOT for me !!! - DOS386, 05.01.2008, 02:22
        MS the "only hope" ? NOT for me !!! - RayeR, 05.01.2008, 18:58
        MS the "only hope" ? NOT for me !!! Multiboot - DOS386, 08.01.2008, 01:47
        NTVDM forever! - Japheth, 08.01.2008, 09:02
        MS the "only hope" ? NOT for me !!! Multiboot - Steve, 08.01.2008, 13:54
        MS the "only hope" ? NOT for me !!! Multiboot - Rugxulo, 09.01.2008, 01:19
        MS the "only hope" ? NOT for me !!! Multiboot - RayeR, 14.01.2008, 21:34
        A TSR worth a try in Vista - Japheth, 05.01.2008, 11:04
        A TSR worth a try in Vista - Rugxulo, 05.01.2008, 21:08
        A TSR worth a try in Vista - Khusraw, 07.01.2008, 11:06
        A TSR worth a try in Vista - Rugxulo, 07.01.2008, 14:44
        A TSR worth a try in Vista - Japheth, 07.01.2008, 17:34
        A TSR worth a try in Vista - Rugxulo, 09.01.2008, 01:09