DOS ain't dead

huge memory model (Announce)

posted by Guti , 25.11.2022, 10:23

> When I started writing PDOS/86 I didn't know
> what "huge" actually was, and I thought it was
> for strange people.
>
> I chose "large" for PDOS/86 and when I went to
> use my memory management routines, written in
> pure C90, originally for MVS, I found that I
> was stuck - I could only manage 64k, even
> though I was using large memory model.
>
> Rather than change my seemingly valid C90 code,
> I instead put a hack into PDOS/86.
>
> About an hour ago the hack was finally killed
> off and the problem was solved simply by
> recompiling with the "huge" memory model and
> a 32-bit size_t. With pure 8086 instructions
> from Watcom C, but using PDPCLIB as the C
> library.
>
> Code available at http://pdos.org
>
> BFN. Paul.

I discovered huge memory model back in the Turbo C++ days. A simple solution to adress all available conventional memory with chunks larger than 64K.

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Visit my personal blog at https://www.javiergutierrezchamorro.com

Complete thread:

• huge memory model - kerravon, 22.11.2022, 16:30 (Announce)
  • huge memory model - Guti, 25.11.2022, 10:23
    • huge memory model - kerravon, 25.11.2022, 19:41
      • huge memory model - Guti, 29.11.2022, 06:55
        • huge memory model - kerravon, 29.11.2022, 08:44