Brand for '386 motherboard?!?

August 30, 2009 at 15:19:20
Specs: N/A
I have a very old 80386 mobo but I don't know what brand it is. All it says on it is "M320 Rev. 1.0" (and made in Taiwan) and I'm guessing that's the model. It has an old AT-style keyboard port, 6 16-bit ISA slots and 1 8-bit ISA slot. The CPU is a Am386 DX/DXL-33 and the math coprocessor is an Intel i387 DX. Both run at 33MhZ. It has 8 SIMM slots for RAM (slots 1-4 for bank 1 and 2-8 for 2.) I know it's old, but I need it for a low-spec floppy-based Linux distro i'm making.

Better yet, it has some 74xx logic chips and only 2(!) surface mount parts! 8-)

PS I have no pics 8-(


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August 30, 2009 at 15:53:56
There was a brand called Mustang that has been out of business for ages.

Could also be Microstar (MSI).

There are probably voltage jumpers on the board. Set them wrong and fry the processor.

Going to be hard to get any info on a board that old even if you know the manufacturer.

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August 30, 2009 at 22:21:34
You might want to check one of the TH99 sites. They tend to come and go but this link is still good:

See if any of the pics of their 386 boards match yours.

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August 31, 2009 at 17:18:23
I couldn't find anything matching M320 on my th99 cd. Olivetti did have a M300 and a M380 though. Any other numbers hiding on the board?

What is the chipset brand and number?


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September 2, 2009 at 22:18:24
NEVER MIND I was wanting to know as it seemed to be very very picky about ram. Turned out one of the SIMM slots had a bad pin and it wasn't any special ram requirements.
Thanks anyway.


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