VOGONS


First post, by flupke11

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Hi all,

I have an MGA-based Matrox card in 16-bit ISA-format.

Does anyone know whether this card is capable of working in an 8-bit setting? I suppose the dip switches might come in play, but I have no documentation and the internet is not helping me either.

The idea is to use this card as a replacement for the hercules output on an old Sanyo 8088 XT, so I can hook up that system to the screens I have available.

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MGA3.JPG
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Stay safe and healthy

Reply 2 of 10, by flupke11

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Thanks for the link, but I'd really like to know if this card is capable of functioning in an 8-bit slot, and which actions (jumpers, dips) I need to take to have it work. The PCI-version has none of these headaches, of course.

Reply 3 of 10, by derSammler

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Why not just try it? I wouldn't assume it works, however. That card was made for professional use, not for putting it into an XT.

The dip switches are apparently for setting the IRQ.

http://retro-net.de/blog.html

Reply 4 of 10, by flupke11

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I tried it, and it did not work. I should have mentioned that in my opening post. 8-bit is definitively not my area of expertise.

Thanks for the information on the dipswitch, it seems logical indeed that these are for IRQ rather than anything else.

Reply 5 of 10, by darry

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If my memory is correct, the VGA performance of early Matrox cards (before the first gen Millennium and Mystique) was pretty abysmal anyway . My personal experience is based on the PCI Impression Lite that a friend owned . Again, going from memory, the correspondence between him and Matrox could basically be resumed as saying the cards were meant as video accelerators for Windows, CAD , etc and had great performance there, but VGA support was there for compatibility purposes only, not as anything that could be considered high performance . Yet again from memory, VGA performance on that PCI Impression Lite was subjectively so bad that it made OAK and Trident ISA cards look good in comparison .

I cannot comment on the Matrox Impression Plus ISA specifically, but I would not expect anything good from it on the VGA front, even if it did work in an 8-bit slot .

Reply 6 of 10, by darry

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"The MGA Millennium has been both a critical and a popular favorite. The board’s success as a game platform was a surprise to Matrox, particularly since gamers scorned the Millennium’s predecessors due to lackluster VGA performance."

From https://www.computer.org/publications/tech-ne … xels/matrox-mga

Reply 8 of 10, by Putas

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On such cards it is also possible for the DIP switches to set memory regions.

darry wrote on 2020-04-07, 03:04:

"The MGA Millennium has been both a critical and a popular favorite. The board’s success as a game platform was a surprise to Matrox, particularly since gamers scorned the Millennium’s predecessors due to lackluster VGA performance."

From https://www.computer.org/publications/tech-ne … xels/matrox-mga

Quote from that article:
1994 – Matrox introduced the Matrox Impression, an AIB that worked in conjunction with a Millennium card to provide 3D acceleration.

I don't think they know what are they talking about.

Reply 9 of 10, by Unknown_K

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The Impression was geared toward 3D CAD work not gaming. I suppose you could run a Millenium for 2D and using the feature connection switch to the Impression plus for 3D CAD.

Collector of old computers, hardware, and software

Reply 10 of 10, by Putas

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Unknown_K wrote on 2020-04-08, 22:25:

The Impression was geared toward 3D CAD work not gaming. I suppose you could run a Millenium for 2D and using the feature connection switch to the Impression plus for 3D CAD.

But what would be the point?
Are there any pictures of AIB Impression?