DOS ain't dead - How to keep resident only a part of the program

How to keep resident only a part of the program (Developers)

posted by Laaca , Czech republic, 14.08.2021, 10:32

> Actually the int 0x21, ah = 0x31 interface does allow one to specify how
> many paragraphs of memory one wants to keep resident. Turbo C and Watcom C
> also accept a paragraph count as a parameter to keep(...) and
> (respectively) _dos_keep(...).
>
> But it might be hard to use this correctly in the context of high-level
> code.

Exactly. I saw in documentatin that INT 21h/AH=31h has a parameter "number of parameters to keep resident" but I don't know how to use it in the pascal code. BTW, in pascal has the Keep function only argument for the return code.

But I know that many assembler programs CAN do it. They use the INT 21h/AH=31h call and determine which portion of code to thow away and which to keep? Or they use some other mechanism?

---
DOS-u-akbar!

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Complete thread:

How to keep resident only a part of the program - Laaca, 14.08.2021, 07:31 (Developers)
- How to keep resident only a part of the program - tkchia, 14.08.2021, 08:49
  - How to keep resident only a part of the program - Laaca, 14.08.2021, 10:32
    - How to keep resident only a part of the program - tom, 14.08.2021, 11:40
      - How to keep resident only a part of the program - RayeR, 14.08.2021, 15:49
        How to keep resident only a part of the program - Laaca, 14.08.2021, 20:18
        How to keep resident only a part of the program - RayeR, 16.08.2021, 03:22
  - How to keep resident only a part of the program - tom, 14.08.2021, 11:28
  - How to keep resident only a part of the program - ecm, 15.08.2021, 13:47
    - How to keep resident only a part of the program - bretjohn, 27.08.2021, 21:22
- How to keep resident only a part of the program - marcov, 14.08.2021, 13:18
- How to keep resident only a part of the program - CandyMan, 27.08.2021, 17:46
- How to keep resident only a part of the program - bretjohn, 27.08.2021, 21:47
- How to keep resident only a part of the program - Laaca, 08.03.2022, 12:24
  - How to keep resident only a part of the program - tom, 08.03.2022, 12:51
    - How to keep resident only a part of the program - tkchia, 08.03.2022, 14:20
      - How to keep resident only a part of the program - bretjohn, 08.03.2022, 19:19
  - How to keep resident only a part of the program - rr, 08.03.2022, 17:32