DOS ain't dead

PSP manipulation from DPMI programs (Developers)

posted by marcov, 17.02.2023, 16:02

> So we see that ENVP points to internal structure
> 'operatingsystem_parameter_envp'. I don't know when and when is this
> structire created (maybe even in the realmode before the protected mode is
> entered)

Afaik in the asm startup code before the main program executes. That already is protected mode. All realmode stuff is handled by the extender.

Complete thread:

• PSP manipulation from DPMI programs - Laaca, 16.02.2023, 00:02
  • PSP manipulation from DPMI programs - Japheth, 16.02.2023, 05:25
  • PSP manipulation from DPMI programs - tkchia, 16.02.2023, 11:18
    • PSP manipulation from DPMI programs - Laaca, 16.02.2023, 19:46
      • PSP manipulation from DPMI programs - tom, 16.02.2023, 20:16
        • PSP manipulation from DPMI programs - Laaca, 16.02.2023, 20:48
      • PSP manipulation from DPMI programs - tkchia, 16.02.2023, 21:23
      • PSP manipulation from DPMI programs - tkchia, 16.02.2023, 21:28
      • PSP manipulation from DPMI programs - tkchia, 16.02.2023, 21:35
        • PSP manipulation from DPMI programs - Rugxulo, 17.02.2023, 08:35
          • PSP manipulation from DPMI programs - tkchia, 17.02.2023, 11:21
            • PSP manipulation from DPMI programs - marcov, 17.02.2023, 16:00
        • PSP manipulation from DPMI programs - Laaca, 17.02.2023, 08:56
          • PSP manipulation from DPMI programs - tkchia, 17.02.2023, 11:07
            • PSP manipulation from DPMI programs - Laaca, 18.02.2023, 00:52
          • PSP manipulation from DPMI programs - marcov, 17.02.2023, 16:02
  • PSP manipulation from DPMI programs - tkchia, 16.02.2023, 11:26
  • PSP manipulation from DPMI programs - tkchia, 16.02.2023, 17:14