VOGONS


First post, by jmellidg

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Hi guys,

I'm looking for a 386dx motherboard BIOS with the following string

30-0200-001453-00101111-111192-mxic-h

I think that the motherboard model is - Informtech IT-AM33/40-DLC

I've found information about it but no the bios. If you have one or you know where I can find it, please tell me I will be very grateful

Thank you very much!!

Reply 1 of 13, by Thermalwrong

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Hmm, can you show a picture of it? I think I have one, it looks like this:

386DX40-with-DS1287-1 (Custom).jpg
Filename
386DX40-with-DS1287-1 (Custom).jpg
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1.12 MiB
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269 views
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CC-BY-4.0

I can pull it out and get a copy of the BIOS, it looks like I don't have that saved yet. Then I'll probably put it into the 386 bios thread too

Reply 2 of 13, by jmellidg

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Hello!!! Yes I've bought just a few days ago. It seems that there's no 8742 and no bios, so if you are so so kind to make me a copy of the bios and the 8742 bios I will be very happy and I need to invite you a beer if you come to Spain!!

Screenshot_2021-11-23-22-50-03-864_com.ebay.mobile.jpg
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Screenshot_2021-11-23-22-50-03-864_com.ebay.mobile.jpg
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Public domain

Reply 4 of 13, by Deksor

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According to here, the actual brand is kaimei. (manufacturer code is 1453)

https://www.ultimateretro.net/en/bios/infoadv

Trying to identify old hardware ? Visit Ultimate Retro - Project's thread The Ultimate Retro project - a stason.org/TH99 alternative

Reply 7 of 13, by Deksor

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It's a microcontroller with some program to turn it into a keyboard controller. I don't think these have been property reverse engineered yet. However they're usually exchangeable.

Trying to identify old hardware ? Visit Ultimate Retro - Project's thread The Ultimate Retro project - a stason.org/TH99 alternative

Reply 9 of 13, by quicknick

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For a quick test I guess it would be ok to use a BIOS from another board with the same chipset.
Let's say, Octek Jaguar V, which you can find here
Or the more obscure TAM/33/40-MA0 from here
Keyboard controllers are usually interchangeable, so you might borrow one from another motherboard.

Reply 10 of 13, by Thermalwrong

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Okay, dug it out from its usual home and pulled the BIOS chip. It's quite tightly integrated since it's a baby-AT board in a micro ATX case.
Anyways, here's the BIOS ROM, along with a picture showing which ROM chip it is. I'll get this into the 386 bios thread too.

IT-AM33-40-OriginalBIOS-MX27C512PC-15.jpg
Filename
IT-AM33-40-OriginalBIOS-MX27C512PC-15.jpg
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396.06 KiB
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109 views
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CC-BY-4.0

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Reply 12 of 13, by Horun

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Found this board to be very near exact (same real pics) except the location of Jp2 and Jp4 are swapped AND the clock jumpers are a bit diff in th MH picture
https://www.ultimateretro.net/en/motherboards/3103
Also the page lists JP3 but the MH image does not show it. But those errors are common in many of the old MH/TH99 pictures.

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor.