DOS ain't dead

DPMI - how to chain user and original RM handler? (Developers)

posted by Laaca , Czech republic, 29.04.2023, 14:04

> You can probably get away with loading the dword from oldint15_handler and
> store it in [es:edi + 2Ah], then do not change the stack pointer.

I see, it sounds simple. I can't try it just know but it is definitely interresting.
But if it will for any reason not work, is possible to call the old routine via
"INT 31h/0302 - Call Real Mode Procedure With IRET Frame" ?

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DOS-u-akbar!

Complete thread:

• DPMI - how to chain user and original RM handler? - Laaca, 29.04.2023, 00:41
  • DPMI - how to chain user and original RM handler? - ecm, 29.04.2023, 08:43
    • DPMI - how to chain user and original RM handler? - ecm, 29.04.2023, 08:45
      • DPMI - how to chain user and original RM handler? - Laaca, 29.04.2023, 14:04
        • DPMI - how to chain user and original RM handler? - ecm, 29.04.2023, 15:17
  • DPMI - how to chain user and original RM handler? - bretjohn, 04.05.2023, 04:03
  • DPMI - how to chain user and original RM handler? - CandyMan, 05.05.2023, 12:36
    • DPMI - how to chain user and original RM handler? - Laaca, 05.05.2023, 21:53
    • DPMI - how to chain user and original RM handler? - Laaca, 12.06.2023, 23:39