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FW: video behind a bridge
- To: Mailing List Recipients <pci-sig-request@znyx.com>
- Subject: FW: video behind a bridge
- From: Jeff Dahlin <JDahlin@appiantech.com>
- Date: Fri, 4 Apr 1997 15:20:47 -0800
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- Resent-Date: Fri, 4 Apr 1997 15:20:47 -0800
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>----------
>From: Cobra[SMTP:edc@kaiwan.com]
>Sent: Friday, April 04, 1997 8:50 AM
>To: Mailing List Recipients
>Subject: video behind a bridge
>
>I am trying to setup a machine with a VGA card behind
>a 21150 bridge. It works ok at 640 but I cannot go beyond that resolution
>(using NT4.0). Has anyone elst tried this?
>
> thx, Ed
We have a design that places two graphics chips behind a 21052 to
provide a dual monitor desktop solution in one PCI slot for Win95 and
WinNT.
From our experience I have a guess about what might be happening. There
may be a bug with the driver supplied by the VGA board manufacturer. My
understanding is that the WinNT VGA driver supports only 640x480. If a
different resolution is used, the board specific driver must be used.
If the board specific driver isn't written to handle busses other than
bus 0 it won't be able to find the card and therefore the card won't
work in any other resolutions.
>Jeff Dahlin
>Appian Graphics
>
>jdahlin@appiantech.com
>www.appiantech.com
ô á