8086 Mainboard with (Baby) AT Form Factor \ VOGONS

8086 Mainboard with (Baby) AT Form Factor

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First post, by KVM Nerd

Posted on 2024-06-07, 12:54

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Hi,

for reasons, I am currently looking for an 8086 mainboard which fits (Baby) AT cases. I did an extensive research, but all I found were tons of 8088/V20 mainboards ("Turbo XT") out there, but that is not what I am looking for, I want a real 8086.

Has there ever been an 8086 mainboard which was retrofitted to the AT form factor? Can someone recommend a model which may show up every once in a while at the usual places?

Best regards

Why not hook it up to a KVM switch?

Reply 1 of 9, by Grzyb

Posted on 2024-06-07, 14:14

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Juko NEST N3 supports both 8086 and V30.

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Reply 2 of 9, by KVM Nerd

Posted on 2024-06-08, 11:07

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Grzyb wrote on 2024-06-07, 14:14:

Juko NEST N3 supports both 8086 and V30.

Thank you for the suggestion, that looks very promising! I like the fact that the CPU frequency can be changed hardware and software wise. Would be interesting how this affects hard disk performance based on the selected interleave.

Why not hook it up to a KVM switch?

Reply 3 of 9, by wbahnassi

Posted on 2024-06-08, 12:13

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I've seen a couple of TurboXTs in action, they turn off turbo during floppy disk accesses. I guess for access timing as you mentioned.

Turbo XT 12MHz, 8-bit VGA, Dual 360K drives
Intel 386 DX-33, Speedstar 24X, SB 1.5, 1x CD
Intel 486 DX2-66, CL5428 VLB, SBPro 2, 2x CD
Intel Pentium 90, Matrox Millenium 2, SB16, 4x CD
HP Z400, Xeon 3.46GHz, YMF-744, Voodoo3, RTX2080Ti

Reply 4 of 9, by KVM Nerd

Posted on 2024-12-17, 09:16

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Grzyb wrote on 2024-06-07, 14:14:

Juko NEST N3 supports both 8086 and V30.

Unfortunately this nice piece of hardware did not show up wherever I was searching for it for half a year know. If anyone had a tip for me where to look for it, that would be great!

Why not hook it up to a KVM switch?

Reply 5 of 9, by jasa1063

Posted on 2024-12-18, 21:12

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KVM Nerd wrote on 2024-12-17, 09:16:

Grzyb wrote on 2024-06-07, 14:14:

Juko NEST N3 supports both 8086 and V30.

Unfortunately this nice piece of hardware did not show up wherever I was searching for it for half a year know. If anyone had a tip for me where to look for it, that would be great!

I have only seen one for sale in the last 5 years on eBay which I bought at a very steep price. I don't regret doing it as this seems to be one rare motherboard. Juko ST 12MHz motherboards are much more common, but those are only a NEC V20. You may have better luck on Amibay or Yahoo Auctions Japan.

Reply 6 of 9, by Anonymous Coward

Posted on 2024-12-19, 07:07

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Even when I bought my Juko NEST way back in 2004 it was quite rare compared to the Juko ST.

"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium

Reply 7 of 9, by KVM Nerd

Posted on 2024-12-20, 19:09

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Thank you for your suggestions! I will include this in my search.

Yeah, the Juko ST and especially all the other Turbo XT boards are quite common, you can find a new offer about every week, but they are no "real" 8086 boards in my sense unfortunately.

Why not hook it up to a KVM switch?

Reply 8 of 9, by jasa1063

Posted on 2024-12-20, 22:33

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Have a look at this as a possibility for a modern 8086 computer:

https://www.reddit.com/r/vintagecomputing/com … t_poisk2_clone/

You may also want to consider looking for Epson Equity Ie as it was known in the US or Epson PSE-30 in Europe. This is a 10MHz 8086 computer of which I have the Ie version. Very fast computer, just a slight bit slower than the Juko Nest N3.

Reply 9 of 9, by KVM Nerd

Posted on 2025-03-08, 16:27

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Looks like a Juko NEST N3 has been sold in February on eBay. These search agents are working great... not.

Why not hook it up to a KVM switch?

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