strange hardware problem on my pentium 2 machine \ VOGONS

strange hardware problem on my pentium 2 machine

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First post, by Nic-93

Posted on 2016-10-10, 20:27

Nic-93 Offline

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I have the list as following pci slot 1 is graphic card for 2d and slot 2 is 3dfx and 3 are for ethernet, and then isa slot 3 have i mounted soundcard onto.
the ps2 keyboard is causeing the computer to restart if you plug it in.
and its the asus p28 pentium 2 at 450.

http://mail.lipsia.de/~enigma/neu/pics/mainbo … rd_asus_p2b.jpg

Last edited by Nic-93 on 2016-10-10, 21:01. Edited 1 time in total.

Reply 1 of 6, by clueless1

Posted on 2016-10-10, 20:41

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I would suggest pulling out the Voodoo, ethernet and sound cards and reset your BIOS to defaults. Then try again. Does it still happen? If so, then try a different keyboard.

If you can get the PC to a point where it stops rebooting when you have a keyboard plugged in, then start adding back your peripheral cards one at a time, testing after each one to try and find the conflict.

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Reply 2 of 6, by Logistics

Posted on 2016-10-10, 20:46

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You don't mean to say that you're plugging g a PS/2 keyboard in after the system has booted, are you?

Reply 3 of 6, by Nic-93

Posted on 2016-10-10, 21:02

Nic-93 Offline

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Logistics wrote:
You don't mean to say that you're plugging g a PS/2 keyboard in after the system has booted, are you?

its while the keyboard is plugged in.

Reply 4 of 6, by Nic-93

Posted on 2016-10-10, 21:35

Nic-93 Offline

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clueless1 wrote:
I would suggest pulling out the Voodoo, ethernet and sound cards and reset your BIOS to defaults. Then try again. Does it still happen? If so, then try a different keyboard.

If you can get the PC to a point where it stops rebooting when you have a keyboard plugged in, then start adding back your peripheral cards one at a time, testing after each one to try and find the conflict.

i treid your suqestion and apearently it didnt like my s3 virge card, so i used a trio64 insted.

Reply 5 of 6, by kanecvr

Posted on 2016-10-11, 02:27

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This happens when your video card tries to use the same IRQ as the PS2 keyboard/mouse controller (IRQ12). This is a bug I encountered on some intel 430 and 440 chipset boards and various PCI video cards (S3 Trio64, S3 Virge, Voodoo Banshee, Riva 128ZX). You need to force the video card to use IRQ11 - to do that, enter BIOS using a video card that does not force itself onto IRQ12, and set "Assign irq for vga" to "Disabled" . Then you can plug in the video card you want to use, go into BIOS and force the PCI slot the video card is using to IRQ 10 or 11 (it should be under PCI PNP Configuration). Reboot, go into bios once more and enable "Assign IRQ to VGA". That fixed it for me on my Tekram i430 board witch would reboot when loading any mouse driver with a PS/2 mouse plugged in.

Last edited by kanecvr on 2016-10-11, 23:39. Edited 1 time in total.

Reply 6 of 6, by Nic-93

Posted on 2016-10-11, 23:28

Nic-93 Offline

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ill keep that in mind for enother time, but i have a few network cards here im wonder on being most compatibel with windows 95, wouldnt i most likely have a chance with a 3com ethernet lan card?

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