Strange vsync in some dos modes. with Radeon 9800 Pro \ VOGONS

Strange vsync in some dos modes. with Radeon 9800 Pro

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First post, by Lynxman

Posted on 2025-11-22, 19:07

Lynxman Offline

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I tried running dos 7.1 on one of my systems today for fun (Asus A7N8X-E-Deluxe / AthlonXP 3200+ / Radeop 9800 Pro) and when I ran Quake timedemo in 640x480 I got 59,9 fps which I thought was odd since I get 78 with my other system that has 1800+ and S3 ProSavage 8. Then I ran 800x600 and got 59,7 so it seems like there's a locked vsync at these resolutions. Running at 320x200 gives a frame rate of 300+ so it's not all modes. I tried Using vid_wait 0 in Quake but it didn't do anything. BTW, I used Fastvid. Not running fastvid gives just 44 fps at 640x480.

Is there some vesa utility to turn off this limit for benchmarking?

Reply 1 of 2, by marxveix

Posted on 2025-11-22, 19:16

marxveix Offline

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Latest ATi vesa utility was up to Rage4 (Rage128/Rage128 Pro)

Best ATi Rage3 drivers for 3DCIF / Direct3D / OpenGL / DVD : ATi RagePro drivers and software
30+MiniGL / OpenGL Win 9x dll files for all ATi Rage3 cards : Re: ATi RagePro OpenGL files

Reply 2 of 2, by The Serpent Rider

Posted on 2025-11-25, 01:33

The Serpent Rider Offline

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vid_wait command should work after switching modes.

Also: PCI Video cards benchmark: Electric Boogaloo Edition

I must be some kind of standard: the anonymous gangbanger of the 21st century.

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