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UX with nVidia GTX 970 (Users)

posted by Ringding, 30.07.2022, 08:50

> 5th Gen core i3/i5/i7. (Broadwell). 6th Gen-up = very slow, unaccelerated
> VESA graphics in DOS... no MTRRs are enabled. I've never found a workaround
> or a hack to prevent this bug / crippling / devolution.

AFAIK, enabling the write-combining cache needs to be done with PAT now. This could probably work if managed by an appropriately modified VM86 monitor, but only for real-mode games. Most DOS-extended games run without paging, which would also prevent PAT from being used. At least that’s how I imagine it would work; I’ve never looked at PAE in more detail.

 

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