Re: [offtopic] dual vga?

Jakob Borg (jb@k2.lund.se)
Wed, 8 Jul 1998 12:59:07 +0200


On Tue, Jul 07, 1998 at 10:53:11AM -0700, David Schleef wrote:

> There are a few web pages and/or FAQs that cover this. Basically, VGA
> cards all respond to the same I/O addresses. If you happen to have
> a bucketload of old ISA SVGA cards, it is possible to physically modify
> the card so that it responds to a different I/O address and maps the
> video RAM to a different location.
>
> PCI cards don't have this limitation, so it is relatively easy
> (compared to getting out the soldering iron) to go dual-headed. If
> I remember correctly, XFree doesn't (yet) support dual monitors, but
> one of the commercial ones does.

Actually what I was thinking (since the second monitar+card are from the eighties) is to run X on my normal (ATI Mach64 PCI) card+monitor and have some kind of text console/syslog/whatever on the other monitor.

Doesn't VGA map text-mode memory and graphics-mode memory differently? Might it not be possible that way?

-- 
Jakob Borg <jb@k2.lund.se>
[Linux narayan 2.1.108 i586]

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