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Dual VGA ISA Cards Software?

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First post, by ZoomPicard

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Recently acquired a
COLORGRAPHIC COMMUNICATIONS CORPORATION
SUPER DUAL VGA
16bit Isa Card

Dual Vga Card.jpeg
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Here are the full tech specs:
http://arvutimuuseum.ee/th99/v/C-D/50144.htm

I suspect these are early CAD based cards.

On boot you get standard does output on one of the connections on the other you just get the video bios boot screen

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Does anyone know what software would be required in Dos or windows 3.1 that enable the second monitor?

Reply 1 of 6, by vlask

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Dont think they were for cad. Driver support for W3.11, W95, WNT....
http://web.archive.org/web/19961101040548/htt … om:80/warp.html

Sadly for you web archive didnt archived drivers, but theres at last names of zip files. You could try google them, or try later archived versions of pages. Your card belongs to Warp series.
http://web.archive.org/web/19961101040203fw_/ … 80/techsup.html

Edit: this one might be your lucky one.... looks like drivers were archieved....
http://web.archive.org/web/20000611204621fw_/ … vigdrivers.html

Last edited by vlask on 2019-01-05, 09:51. Edited 1 time in total.

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Reply 2 of 6, by root42

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You should put a sticker on that EPROM, or UV exposure from daylight might gradually erase it...

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Reply 4 of 6, by xjas

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jaZz_KCS wrote:

[...] You will only be able to initialize the second screen under Windows (3.11, 95 and NT), not plain DOS.

It looks like there's duplicates of everything, even the Vesa Feature Connector 😜, and the second chip is active at boot as shown in the photo. Couldn't you just start writing bits to the second chip's registers & framebuffer if you knew where they were mapped? Windows's video access isn't magic.

Last edited by xjas on 2019-01-05, 11:15. Edited 1 time in total.

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Reply 5 of 6, by jaZz_KCS

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xjas wrote:
jaZz_KCS wrote:

[...] You will only be able to initialize the second screen under Windows (3.11, 95 and NT), not plain DOS.

It looks like there's duplicates of everything, even the Vesa Feature Connecture 😜, and the second chip is active at boot as shown in the photo. Couldn't you just start writing bits to the second chip's registers & framebuffer if you knew where they were mapped? Windows's video access isn't magic.

Maybe possible, especially since Windows 3.1's video access is far from magic. I wonder if it would be possible to write a TSR that redirects to the second connector?

Reply 6 of 6, by ZoomPicard

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Thanks for your input all

I will give some of those drivers ago shortly

In terms of doing development I wouldn't know where to start, I am not really familiar with x86 assembly programming for dos use. I would assume something like TurboC and write C wrapped with some assembly not sure

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