DOS ain't dead

4k resolution under DOS :) (Users)

posted by RayeR , CZ, 18.01.2024, 20:25

Hi, I had a chance to play little bit with 4k LCD connected to my GTX 970. Primary goal is to hack/unlock 4k mode @60Hz under WinXP but I was also curious if there's any chance to get it under DOS too. And it is possible.
But it depends on what kind of connection I use. If LCD is attached via HDMI I got max VESA mode 1280x1024/32bpp however via DP 1.2 I got 3840x2160/8 and 16 (not 32)bpp @60Hz, when switched LCD to DP 1.1 I got the same @30Hz. It's known than nvidia BIOS builds VESA mode list dynamically according to EDID of attached monitor. I don't know if EDID is different for DP and HDMI. I run VESA test on it got decent ~180FPS :)

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DOS gives me freedom to unlimited HW access.

Complete thread:

• 4k resolution under DOS :) - RayeR, 18.01.2024, 20:25
  • 4k resolution under DOS :) - Zyzzle, 19.01.2024, 01:51
    • 4k resolution under DOS :) - RayeR, 20.01.2024, 03:59