First post, by Holering
Mobo onboard USB is sharing an IRQ with video card. Have had strange things happen as well: installing FFVII sometimes causes screen to go blank and system hang, opengl programs lose focus and slowdown to 0.001 FPS after changing resolution, svideo out will corrupt with dos games (have to alt-tab or hit windows-key to get out and back into dos game to fix). Not sure if strangeness is due to the IRQ being shared, or the driver in use (unofficial 82.69 nvidia driver) but I'm leaning toward the IRQ being shared (it doesn't even show as an IRQ conflict); have the exact same opengl issue in Windows 7 so yeah.
Cannot change IRQ number for my onboard USB port or video card (PCX5750) either. No bios setting to change it, and my keyboard is USB. If I disable all USB devices in device manager in Windows (or bios), I get no keyboard (already have all USB devices disabled except what allows legacy keyboard to work).
Can't move video card to other slot either (use primary PCIE 16x for current-modern GPU's since it runs at 16X speed; second one actually runs @ 4X speed so it wouldn't be fast enough with a modern high-end GPU).
Have acpi disabled in Win 98se BTW; system hangs if I try enabling it.
Is there any software for Windows 98 or DOS, that can try forcing a different IRQ assignment to specified devices?
Really appreciate any help with this!