DOS ain't dead

UX with nVidia GTX 970 (Users)

posted by Zyzzle, 30.07.2022, 02:34

> The xfer speed in vesatest was cca
> 2,8GB/s same as with GTX 670. So there seems no differences in VBE
> implementation on this nvidia cards. Maybe it helps someone upgrading his
> system (GTX 9xx is the last line supported in WinXP-x86).

So, the GTX 970 does support setting MTRRs write-cache combining with your MTRRLFBE utility? Does the card work well on "modern" DOS systems, i5/i7 8th Gen and above with MTRRs enabled?

Seems like even Intel onboard VGA graphics set the VESA modes dynamically based upon ECID of the monitor, but the last onboard Intel Graphics VGA BIOS which will enable MTRRs without freezing the complete system is the 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.

Complete thread:

• UX with nVidia GTX 970 - RayeR, 27.07.2022, 16:31 (Users)
  • UX with nVidia GTX 970 - Oso2k, 28.07.2022, 04:49
  • UX with nVidia GTX 970 - Zyzzle, 30.07.2022, 02:34
    • UX with nVidia GTX 970 - Ringding, 30.07.2022, 08:50
      • UX with nVidia GTX 970 - Zyzzle, 30.07.2022, 09:36
        • UX with nVidia GTX 970 - Japheth, 31.07.2022, 02:34
          • UX with nVidia GTX 970 - Zyzzle, 03.08.2022, 06:31
            • UX with nVidia GTX 970 - RayeR, 16.08.2022, 19:20
              • UX with nVidia GTX 970 - Zyzzle, 17.08.2022, 02:46
                • UX with nVidia GTX 970 - RayeR, 17.08.2022, 15:38
                  • UX with nVidia GTX 970 - Zyzzle, 20.08.2022, 07:44
                    • UX with nVidia GTX 970 - marcov, 20.08.2022, 14:01