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Re: Am486DX4-100 troubles

Excellent! I'm glad you're getting better performance now. Graphics cards were not as critical then as they are now, but if they're weak, the system will drop like a stone. The Trident cards, especially the early 8900 and 9000 cards, were notorious for being weak. Couple that with the ISA bus …

Re: Am486DX4-100 troubles

The next is the turbo button. I didn't see any mention of it in your post, so I don't know if you've tried the switch, or, in lieu of a switch, a jumper. Try it in both positions of you haven't already. My apologies, I thought I mentioned that. The turbo button is active and I have tried switching …

Re: Am486DX4-100 troubles

It may be more complicated than just the Trident. Another of our forum members, gerwin, had similar issues with an AM486dx4-100 on this exact board, and found a solution. Please read through this thread. The solution is around two-thirds down the first page, and involves changing wait states in the …

Re: Digital sound quirks with Vibra 16S

You'll need to do a bit of reading on IRQs and DMAs then, because it is absolutely critical when working with these old systems. Effectively, each device needs its own IRQ (Interrupt ReQuest) and DMA (Direct Memory Access) Channel. (there are exceptions where sharing IRQs is permissible, but …

Re: Am486DX4-100 troubles

It may be more complicated than just the Trident. Another of our forum members, gerwin, had similar issues with an AM486dx4-100 on this exact board, and found a solution. Please read through this thread. The solution is around two-thirds down the first page, and involves changing wait states in the …

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