Isa video card is glitchy in 486 and pentium board \ VOGONS

Isa video card is glitchy in 486 and pentium board

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First post, by bluejeans

Posted on 2016-11-11, 04:22

bluejeans Offline

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Joined: 2016-07-07, 20:35

In the 486 I'd get graphical corruption on the bios startup screen and the bios itself (like ascii/ansi characters all over), now I can't turn that system on, though I think it just finally died after being turned on and off too much.

The pentium socket 7 board would not boot with it in at all - one long beep, three short, which from memory is a video card problem. All irq's in the bios are set for legacy isa, is it just not realistic to expect a socket 7 board to boot with an isa video card?

Reply 1 of 2, by Logistics

Posted on 2016-11-11, 18:12

Logistics Offline

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If your board has ISA, there's nothing questionable about booting with an ISA video card. It's the card that might not be compatible, not the motherboard.

Reply 2 of 2, by h-a-l-9000

Posted on 2016-11-11, 20:38

h-a-l-9000 Offline

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Joined: 2005-02-23, 00:14

Dirt on the ISA connector? Use the soft side of a rubber to clean. Als re-seat any socketed chips on the card.

Also, if the card is way too ols its BIOS may be CPU speed sensitive.

1+1=10

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