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Is there a DOS memory documentation available? (Users)

posted by mceric, Germany, 19.01.2024, 18:02

Hmm indeed. A DPMI client is something different than something magically running on the Linux side, and an alternative is something different than a port. Also interesting that dosemu2 DPMI can be based either on Linux tasks, KVM or emulated CPU tasks?

> You're probably confusing comcom32 with dosemu2's default DOS kernel, fdpp.
> The fdpp kernel is a port of the FreeDOS kernel but most of its code runs
> as host code in what I believe is a "dosemu2 plugin". In a dosemu2 compiled
> as an amd64 long mode application, most of the matching fdpp will also run
> as 64-bit code.
Quite possibly the root of my confusion, yes. Thanks for the clarification!

Thanks to Japheth as well: VME only accelerating software interrupts, but not hardware IRQ, makes a significant difference that I should have known about.

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FreeDOS / DOSEMU2 / ...

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