Race Sim Central
Rec.Autos.Simulators Archive

ICR2 flicker in SVGA mode

1 post by 1 person · 12 Mar 1996 - 12 Mar 1996

Jeff Han 12 Mar 1996#313945
Quoted text (10 lines)>>>I've just got ICR2 and I've tried running it in SVGA mode but it just flickers a hell of a lot. I know in the manual that is says the UVBE driver may no > . > I had exactly the same thing on my P90 with an ATI Mach64 graphics card. > I played around with the 3 options in the UVCONFIG program (I think they > are "Disable VBE 2.0, Disable old Vesa BIOS and another" until the > problem went away. I believe the problem to be an incompatibility > with Univbe and my ATI card since I aslo get annoying flicker in FS5 when > I run UNIVBE as the VESA driver (I know there is an actual Mach64 driver > for FS5 but UNIVBE gives a slightly smoother frame rate).
Yes, it is a UNIVBE 5.1a problem with certain graphics chipsets. I experience it with my ArkLogic 2000 based video card. It happens only at 640x480. If you absolutely need VESA 2.0 compliance to run the game (ICR2 doesn't require it, and on a 100MHz Pent. doesn't really need it, IMHO) you have a few options: 1) Call your video card manufacturer and check to see if there is a newer BIOS available for your card. If there is, check to see if it is VESA 2.0 compliant. If so, get it and install it. If you have VESA 2.0 on the board you will never have to mess with UNIVBE again. 2) Wait for the upcoming UNIVBE 5.2 (6.0?) release and see if it finally addresses your card properly. Unfortunately I've heard from good sources that even in the latest developer beta it still doesn't support ArkLogic 2000 chips or Matrox Millenia Boards correctly....But, Matrox Millenia board owners can benefit from #1 above because I know Matrox has a VESA 2.0 compliant bios for their board now. 3) Buy a new board or wait for all games to go Win95 native. Disabling things like "VBE 2.0" in the UVConfig program are akin to not even runing UniVBE. If you don't use VBE 2.0 then you do not benefit from 32bit protected mode (ie 'flat') memory addressing or the linear framebuffer...the two biggest speed enhancements that VESA 2.0 compliance give you.

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