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Using Multiple CPU Cores in DOS? (Miscellaneous)

posted by bretjohn(R) Homepage E-mail, Rio Rancho, NM, 15.09.2011, 18:24

> in protected mode, this very much depends on the DPMI host, as you are
> accessing 'memory' that does not exist, so the DPMI host has not
> necessarily page table descriptors for this memory allocated, and must
> somehow emulate that. I remember that FD-EMM386 was modified to handle
> this, but forgot the details

I'm not using DPMI, and MMIO is "real" memory -- it's just not RAM. Also AFAIK, you can't assign an XMS handle to a specific known physical memory address above 1 MB, but maybe you know something I don't. XMS moves won't work in this situation unless you can do that. Plus, this needs to work even if XMS isn't available.

> P.P.S: use and run
> t measure these numbers;

The site seems to need a non-anonymous login and password.


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