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Using Multiple CPU Cores in DOS? (Miscellaneous)

posted by RayeR(R) Homepage, CZ, 16.09.2011, 18:22

> Based on what I
> see in the code and comments, it looks like the speed issues with INT 15.87
> from RM may be more related to fiddling with the A20 line, and not the time
> it takes to switch CPU modes like I though it was. Is that correct?

I think that A20 is fiddled only when acessing HMA so it's useless for reaching MMIO at higher address. And when himem access XMS it shouldn't do extra settings of A20. It seems to mile like 2 different things without any relations.

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DOS gives me freedom to unlimited HW access.

 

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