DOS ain't dead - INT 15.87 in protected mode

INT 15.87 in protected mode (Developers)

posted by Japheth , Germany (South), 30.08.2011, 05:27

> Presumably this was never meant to work when already in pmode ...
> It could depend on what DPMI server you're using ...
> whether running under EMM386 ...
> whether it switches back to real mode or V86 mode...
> Maybe you need a DPMI server ... that can support both 16-bit and 32-bit...
> I doubt it will ever work this way ...

All these guesses are wrong.

Calling int 15h via DPMI int 31h, ax=0300 "should" always work if it's done correctly. If it does not, it's a bug in the DPMI host.

---
MS-DOS forever!

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Complete thread:

INT 15.87 in protected mode - Laaca, 29.08.2011, 14:11
- INT 15.87 in protected mode - Rugxulo, 29.08.2011, 23:28
  - INT 15.87 in protected mode - Japheth, 30.08.2011, 05:27
    - INT 15.87 in protected mode - Rugxulo, 30.08.2011, 05:37
    - INT 15.87 in protected mode - Laaca, 30.08.2011, 07:22
      - INT 15.87 in protected mode - Japheth, 30.08.2011, 08:47
        INT 15.87 in protected mode - Rugxulo, 31.08.2011, 01:30
        INT 15.87 in protected mode - Laaca, 31.08.2011, 07:33
        INT 15.87 in protected mode - Rugxulo, 31.08.2011, 21:27
        INT 15.87 in protected mode - Laaca, 02.09.2011, 07:10
        INT 15.87 in protected mode - marcov, 02.09.2011, 09:58
        INT 15.87 in protected mode - Rugxulo, 03.09.2011, 21:49
        INT 15.87 in protected mode - DOS386, 04.09.2011, 12:43
        INT 15.87 in protected mode - Japheth, 31.08.2011, 10:11
        INT 15.87 in protected mode - Rugxulo, 31.08.2011, 21:25
        INT 15.87 in protected mode - ecm, 01.09.2011, 02:17
        INT 15.87 in protected mode - Rugxulo, 01.09.2011, 04:31
        INT 15.87 in protected mode - Rugxulo, 01.09.2011, 05:00
- INT 15.87 in protected mode - RayeR, 07.09.2011, 10:28
  - INT 15.87 in protected mode - Laaca, 07.09.2011, 12:28
    - INT 15.87 in protected mode - RayeR, 07.09.2011, 21:05
      - INT 15.87 in protected mode - Laaca, 08.09.2011, 07:33
        INT 15.87 in protected mode - bretjohn, 08.09.2011, 18:19
        INT 15.87 in protected mode - Laaca, 08.09.2011, 22:39
        INT 15.87 in protected mode - Rugxulo, 08.09.2011, 22:50
        INT 15.87 in protected mode - RayeR, 08.09.2011, 22:27
        INT 15.87 in protected mode - bretjohn, 09.09.2011, 00:31
        INT 15.87 in protected mode - RayeR, 09.09.2011, 01:51
        INT 15.87 in protected mode - bretjohn, 09.09.2011, 20:09
        INT 15.87 in protected mode - bretjohn, 09.09.2011, 23:17