DOS ain't dead - VESAMTTR (recovered from Google)

VESAMTTR (recovered from Google) (DOSX)

posted by RayeR , CZ, 12.09.2007, 20:31

> Any benefit from jumping via IDT (VESAMTRR) from GDT ( RayeR's coming up
> solution ) ?

I think it would be easier to hack NT from NT, I mean to use kernel mode driver to unprotect xDT, or allocate some descriptors for application and return selector. I think it would help some games/apps using VESA LFB - they needs to map physical memory and create descriptor to LFB which now couldn't (I know about nolfb TSR but this would faster). BTW setting MTRR is not needed under windows because vga/other drivers do it for you. Before I know MTRRs I was very wondered why my VGA is much faster when quick-reboot from windows to DOS (yeah write combining was enabled)

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DOS gives me freedom to unlimited HW access.

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Complete thread:

VESAMTTR (recovered from Google) - DOS386, 23.07.2007, 02:42 (DOSX)
- VESAMTTR (recovered from Google) - RayeR, 03.09.2007, 20:45
- VESAMTTR (recovered from Google) - RayeR, 03.09.2007, 20:58
  - VESAMTTR (recovered from Google) - Rugxulo, 04.09.2007, 02:01
    - VESAMTTR (recovered from Google) - RayeR, 04.09.2007, 12:59
      - VESAMTTR (recovered from Google) - Japheth, 04.09.2007, 16:41
        VESAMTTR (recovered from Google) - RayeR, 04.09.2007, 20:25
        VESAMTTR (recovered from Google) - Japheth, 04.09.2007, 22:32
        VESAMTTR (recovered from Google) - DOS386, 05.09.2007, 02:17
        VESAMTTR (recovered from Google) - RayeR, 05.09.2007, 09:53
        VESAMTTR (recovered from Google) - Japheth, 06.09.2007, 08:27
        VESAMTTR (recovered from Google) - DOS386, 11.09.2007, 06:54
        VESAMTTR (recovered from Google) - RayeR, 12.09.2007, 20:31
        VESAMTTR (recovered from Google) - DOS386, 13.09.2007, 02:21
      - VESAMTTR (recovered from Google) - Rugxulo, 05.09.2007, 14:51
        VESAMTTR (recovered from Google) - RayeR, 05.09.2007, 16:22
        VESAMTTR (recovered from Google) - Rugxulo, 05.09.2007, 20:56
        VESAMTTR (recovered from Google) - RayeR, 06.09.2007, 01:08
        VESAMTTR (recovered from Google) - Rugxulo, 06.09.2007, 04:40
        VESAMTTR (recovered from Google) - rr, 06.09.2007, 16:56
        VESAMTTR (recovered from Google) - Rugxulo, 07.09.2007, 04:12
        VESAMTTR (recovered from Google) - RayeR, 06.09.2007, 22:35
        VESAMTTR (recovered from Google) - Rugxulo, 07.09.2007, 04:14
        VESAMTTR (recovered from Google) - RayeR, 07.09.2007, 10:18
        VESAMTTR (recovered from Google) - rr, 07.09.2007, 10:45
        VESAMTTR (recovered from Google) - RayeR, 08.09.2007, 01:46
        VESAMTTR (recovered from Google) - Rugxulo, 08.09.2007, 07:03
        VESAMTTR (recovered from Google) - RayeR, 08.09.2007, 22:03
        VESAMTTR (recovered from Google) - rr, 08.09.2007, 22:49
        VESAMTTR (recovered from Google) - RayeR, 10.09.2007, 14:18
        VESAMTTR (recovered from Google) - Japheth, 06.09.2007, 07:17
        VESAMTTR (recovered from Google) - RayeR, 06.09.2007, 22:34
        VESAMTTR (recovered from Google) - rr, 06.09.2007, 16:51
        VESAMTTR (recovered from Google) - RayeR, 06.09.2007, 22:33
        VESAMTTR (recovered from Google) - Rugxulo, 07.09.2007, 05:11
        VESAMTTR (recovered from Google) - rr, 07.09.2007, 10:40
        VESAMTTR (recovered from Google) - rr, 07.09.2007, 10:40