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Re: My MB-8500TTD arrived ..but is a bit unwell.

Posted on 2019-09-02, 10:02

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Since you are running the FSB at 66 MHz with the AMD K6-III-400, the motherboard is not being run out of spec. Running the motherboard's FSB at 75 or 83 MHz is out of spec, but I've successfully run 83 MHz - and I don't just mean turn it on, run a benchmark, turn it off. My board ran at 500 MHz for …

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

Posted on 2019-09-02, 09:41

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

10 MHz is considered a safe upper limit for most cards. Due to the fixed divisors, on some systems you get either 8.3 Mhz or 11.1 MHz to the ISA bus, depending on the FSB. I'd consider 11.1 MHz only after extensive testing. 16 MHz - do you get HDD write errors? I wonder how long Windows would last.

Any way to run a DOS TSR program before loading Windows NT 4.0?

Posted on 2019-09-02, 09:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Is anyone willing to provide step-by-step directions for running a DOS TSR program prior to loading Windows NT 4.0? Rio444 suggested modifying the MBR and placing the code within the first three sectors, but I have no idea how to do this. I sort of recall someone mentioning that there is a way to …

Re: My MB-8500TTD arrived ..but is a bit unwell.

Posted on 2019-09-02, 07:31

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Did you download the information I posted previously? https://www.vogons.org/viewtopic.php?p=773178#p773178 I have attached the Jan Steunebrink BIOS patch for Cyrix 4x, AMD K6-2, AMD K6-2+, AMD K6-III, AMD K6-III+, and 128 GB HDD support and all BIOSes I have for this board. See BIOS.txt in the zip …

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

Posted on 2019-09-01, 23:52

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

There is an NT4 shell for T35? Where do I get this?

Re: My MB-8500TTD arrived ..but is a bit unwell.

Posted on 2019-09-01, 13:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Yes, it should be even easier to get going at 400 MHz because you can use the 66 MHz FSB. This will allow you to use 256MB of SDRAM. For 500 MHz with a 83 MHz FSB, you must use 256 MB of FPM or EDO RAM. Though I think at 83 MHz FSB, you could still use 64 MB of SDRAM and have a stable system.

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

Posted on 2019-09-01, 12:06

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I tried another AWARD 486 board and it was able to turn off the COM ports. When I finish up testing in the other threads, I'll pull out a few WINBIOS boards and see if they can properly disable the COM ports. Although you mention that two COM ports can share the same IRQ, there may be some bug in …

Re: My MB-8500TTD arrived ..but is a bit unwell.

Posted on 2019-09-01, 11:59

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

The only place to find affordable desirable CPUs is persistence in checking CPU-World postings. It could take a year or two before you want pops up, but you'd better ready within minutes of the poster selling to claim it. It is very competitive on there. I'm slow and usually get the left-overs.

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

Posted on 2019-09-01, 10:42

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, it seemed like it was booting fine, then BSOD. I see the SCSI card in the list of drivers being loaded, so I don't think that's it. I'm going to try to image a different system I have, which has NT4 on a 4 GB partition and Win95c on 4 GB partition, then see if this works, at least for W95. …

Re: My MB-8500TTD arrived ..but is a bit unwell.

Posted on 2019-09-01, 10:40

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

This board will run an AMD K6-III+ 500 MHz chip beautfully with 256 MB RAM if you know of all the quirks to making this happen. Let me know when you are interested and I can walk you through it.

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

Posted on 2019-09-01, 10:14

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

SIV32O beta24 on NT 3.51 running NexGen PF110. CPU Speed displays correctly!

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

Posted on 2019-09-01, 09:00

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Nearly all 486 PCI motherboards have built-in COM ports. Yes, and at the same time, almost all of them have Award BIOS. I searched the Internet and found out that there are very few boards with WinBIOS and built-in ports. Here, at Vogons, there is even a topic about motherboards with WinBIOS …

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

Posted on 2019-09-01, 08:55

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Well, I'll give it a shot in VGA mode at least.

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

Posted on 2019-09-01, 08:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Trying to get to it tonight. I'm testing several systems in different threads at the same time and not getting much sleep.

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

Posted on 2019-09-01, 08:05

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Not too much effort, but it has to go in queue. I am still have your SIV + Nexgen test to do. Never enough sleep. For my SXL2-66 / ULSI DX2-66 system, I just need to swap the SD card from the SCSI2SD device. The SD card is a clone of my IBM 5x86-133/2x system, which tends to work with most other …

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

Posted on 2019-09-01, 06:26

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

But benchmarks results might be skewed, unless the OS used is databased. Now that I think about it further, will an SXL2-66 even run NT4? Or does it need a "real" 486?

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

Posted on 2019-09-01, 06:23

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

Also, my understanding is that AMIBCP will recalculate the checksum when you modify the BIOS, so if you wanted to add PS/2 mouse support to the BIOS, you could properly modify the BIOS, as is done using Modbin for AWARD BIOSes. This is a discussion on this in the native ps/2 mouse adoption thread, …

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

Posted on 2019-09-01, 06:16

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

I need a vacation lol! You and me both! I'll be lucky to get one in the next 20 years, assuming I'm still breathing in and out. I'm looking for testers with : - UMC/OPTI 82C391/82C392, 82C481/82C482 and 82C596/82C597. The software may report erroneous information about chipset name & L2, but I'm …

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

Posted on 2019-09-01, 06:08

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

It might be sufficient to test the motherboard without needing the emulator card. Simply boot with your motherboard and disable COM1 in the BIOS. Then boot into Windows 95 to confirm that COM1 has vanished. Then emulator card should run on COM1 without any problem. OK, I'll try it. Did you confirm …

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

Posted on 2019-09-01, 06:06

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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