Re: Weird issue with a 386 motherboard (SILICON VALLEY 386WB)

Posted on 2019-09-01, 06:06

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nice work. Sounds like your board had similar issues as mine after battery leak damage. Like you, I also replaced the ceramic capacitor near the 32K crystal (and the crystal) and had a faulty repaired trace. I should have posted this earlier: https://www.vogons.org/viewtopic.php?f=46&t=45717 The …

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Re: Where can I find "AMIBCP" (for DOS) ?

Posted on 2019-08-31, 12:50

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Might help somebody (I had versions 2.99 and 2.70), but its a different beast and not quite what we were looking for.

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-31, 11:02

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, of course. I have already sent out much more than five adapters. But few give feedback. And no one reported the exact configuration. In my experience, it takes people quite some time fully test new hobby hardware. I have boxes of stuff waiting to be tested. It might be sufficient to test the …

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Re: ECS P6FX2-A motherboard post error 27 + 25

Posted on 2019-08-31, 08:47

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Many boards don't POST if the RTC battery isn't holding charge, but the screen will usually come on still. Have you tried single and dual CPU configurations? You testing a 1M chip? Try to stick with 256K or 512K chips for testing. If there is an AWARD BIOS for this board, you can try flashing that …

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Re: Weird issue with a 386 motherboard (SILICON VALLEY 386WB)

Posted on 2019-08-31, 08:22

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

In my experience, usually a non-functioning RTC causes a no-POST situation, but I don't want to generalise this. In a board of mine which had a similar level of corrosion destruction, I had to replace the crystal - but the symptoms were different, the clock counting speed non-uniform. My guess the …

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Re: Where can I find "AMIBCP" (for DOS) ?

Posted on 2019-08-31, 07:41

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

That's right, doesn't work.

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Re: Where can I find "AMIBCP" (for DOS) ?

Posted on 2019-08-31, 04:10

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The oldest Windows version I have is 2.42. The oldest DOS version I have is 5.11E. It would be nice to get a hold of every version between 1.0 and 5.0, but I'm feeling pretty pessimistic about this. The odds are about as good as finding a MR BIOS image for the VLSI topcat.

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-31, 03:44

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I have at least two more boards with the WinBIOS - Shuttle HOT-433 and a PC Chips M919. I probably have more but don't recall. I might see what happens on those boards. The HOT-433 has both AWARD and WINBIOSes, so this could shed light on if its soley a WinBIOS issue. You sent out 5 of these …

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Re: 5x86-133 and Voodoo

Posted on 2019-08-31, 03:33

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Some benchmarks with Voodoo on a 486: Re: Voodoo 1 vs. Voodoo 2 on a 486 Voodoo 1 vs. Voodoo 2 on a 486

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Re: Need help to improve the support of 486/586/686 class CPUs in CPU-Z

Posted on 2019-08-30, 21:19

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by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Oh dear. Might mention it is for CPU-Z and used for system identification. With any luck, they will have heard of CPU-Z, as it is fairly defacto software these days. The key is the find a person at AMD who cares and has access to archives. Most employees probably won't want to touch the subject …

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-30, 13:02

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Certainly, there is some combination of hardware and software which aren't getting along well together on my system. Perhaps you can source a motherboard from 1994-1995 with a WinBIOS to test further? At this point, we don't know for sure if it is just my NexGen board, or the majority of WinBIOS …

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-30, 07:28

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The most ideal solution for the serial emulator card is for broad compatibility in systems, and ease of setup. Since IRQ 12 is normally associated with PS/2 mice, I thought IRQ 12 would be a nice fit. If your computer doesn't have a PS/2 mouse, IRQ 12 is usually available. IRQ 5 is often used by …

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Re: UMC8881/8886 Datasheet

Posted on 2019-08-30, 02:25

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Lol! That board is certainly developing a cult following.

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Re: SIV support for 386/486/586 class + DEC Alpha CPUs and 3dfx + Matrox GPUs - Help needed with testing

Posted on 2019-08-29, 22:48

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Should I run chkcpu also? I am half inclined to get one, but feel they are overpriced, what should a NexGen system with PCI slots cost and where would I get one? Luck, patience, and timing have more to do with it than a price. A year or two ago, I think I saw a PCI NexGen sell for around $500 on CPU …

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-29, 22:25

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Enabling COM1 as 3E8, then you can see under properties that the disabled COM1 is set to 3E8. But if I re-enable this COM1 in Windows and reboot, the system hangs once the desktop is shown. 3E8.jpg In this screenshot COM1, is it the adapter? Does the mouse work? If the port is disabled in Windows, …

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-29, 19:33

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

On the screenshot, the enabled COM1 is the emulator card. The disabled COM1 is the MB's serial port set to 3E8. If I sent the MB COM1 back to disabled in BIOS, the disabled COM1 address goes back to 3F8. Yes the mouse works in that screenshoot, but the BIOS-disabled COM1 must also be double disabled …

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-29, 12:34

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Enabling COM1 as 3E8, then you can see under properties that the disabled COM1 is set to 3E8. But if I re-enable this COM1 in Windows and reboot, the system hangs once the desktop is shown. Filename 3E8.jpg File size 337.36 KiB Views 406 views

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Re: SIV support for 386/486/586 class + DEC Alpha CPUs and 3dfx + Matrox GPUs - Help needed with testing

Posted on 2019-08-29, 10:22

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Concerning CPUID, I thought it should be emulated on the NexGen, but I cannot say for sure. Read this comment from CPU-World posted by mtx500, http://www.cpu-world.com/forum/viewtopic.php?p=267052#267052 Posted: Sun Jan 20, 2019 4:35 pm Post subject: Reply with quote I have Windows 98 SE running on …

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Re: Another PS/2 Mouse ISA (ISA8) card adapter

Posted on 2019-08-28, 22:01

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Rio444 wrote: Feipoa, can you change Serial Port1 from 3F8h to 3E8h and check the real situation? And then re-enable MB COM1 in Windows? If it has the same IRQ, won't that cause the system to crash? What are we trying to determine here?

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Re: SIV support for 386/486/586 class + DEC Alpha CPUs and 3dfx + Matrox GPUs - Help needed with testing

Posted on 2019-08-28, 21:57

by

by feipoa

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Alpha will run on the pre-release versions of W2K? I imagine that there would be even less software out there to run on this combination compared to Alpha+NT4.

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