VOGONS


First post, by belzrebuth

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Hi all,
I found an old 286 motherboard that doesn't have any markings that specify model or make, featuring a 10MHz Siemens processor and 1MB RAM (DIP chips but it also has unpopulated SIPP sockets).
The seller claimed that the board is fully functional so I got it but I don't have any ISA graphics card at hand right now and I can't proceed any further.
I have plenty of ISA sound cards and I already ordered a PCB for a CF to ISA open source project so I intend to use that as a drive.
So the only missing pieces are a graphics card and I guess some kind of I/0 card.
The I/0 should be easier to find and I think they are some open hardware solutions as well.
From a quick check I found out that not all ISA cards play well with 286 builds so I seek for advice on what might be a suitable card for it.
Intended use would be testing out various software and games of that era and target display would probably be a LCD VGA display as I don't have any VGA CRT monitors anymore.
Since this won't be a permanent build cause I don't have any AT cases I wouldn't mind if the card would be compatible with later machines as well but that's not an absolute requirement.

Reply 1 of 4, by vstrakh

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These cards worked for me just fine on the Harris 286 @20 MHz.

Cirrus Logic CL-GD54210

cl-gd5420.jpg
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Trident TVGA9000c

trident tvga9000c.jpg
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Reply 2 of 4, by kixs

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Any ISA card with Trident, Cirrus Logic, Tseng ET3000/4000, UMC, OTI... chipset should work fine. Problems might be only with better cards and Windows drivers as 286 doesn't support Windows enhanced mode.

My Amibay | - Updated on 2021-12-01 | Requests also possible

Reply 3 of 4, by belzrebuth

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I got this from eBay https://www.ebay.com/itm/174772780600.
It's based on the Cirrus Logic CL-GD5401-42QC-B and has 256Kb of VRAM.
I think it's period correct for my mainboard but seems a bit trashy.
Hopefully it will do the trick; I paid a bit more than $30 for this POS:P

Reply 4 of 4, by the3dfxdude

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belzrebuth wrote on 2022-01-24, 15:13:
I got this from eBay https://www.ebay.com/itm/174772780600. It's based on the Cirrus Logic CL-GD5401-42QC-B and has 256Kb of VRA […]
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I got this from eBay https://www.ebay.com/itm/174772780600.
It's based on the Cirrus Logic CL-GD5401-42QC-B and has 256Kb of VRAM.
I think it's period correct for my mainboard but seems a bit trashy.
Hopefully it will do the trick; I paid a bit more than $30 for this POS:P

It's not really what we ran on 286s back in the day, (pretty new for 286) but that is an all round decent card. I'd say clean it up and it'll be fine 😀