Re: please explain to me why video/bios shadowing must be disabled to use graphics...

[matt@snip.net]

Well I don't have any problem with graphics in native dos so I guess i'll 
have to go the dual boot route and keep a small dos/windows partition 
available to run my dos stuff. thanks again.

At 05:04 PM 9/21/02 +0100, you wrote:
>On Sat, 21 Sep 2002 matt@snip.net wrote:
>
>[about having an ATI Rage Pro where the screen goes black]
>
>your problem is mostly not video shadowing, but just that DOSEMU does
>not support this video card and does not open up enough ports.
>
>I remember talking about this before when I still used console DOSEMU.
>
>    Date: 2000/03/28
>
>On Tue, 28 Mar 2000, Tuomas Jormola wrote:
>
> > I've got some problems to enable graphics with Dosemu. I think it's
> > because of the graphics card, ATI Xpert@Work 8MB AGP.
> >
> > +$_chipset = "ati"
>
>I don't know much about the X stuff.
>For the console, the problem is that "ati" refers to older ATI cards.
>dosemu probably hanged while trying to initialise the video card, that's
>why you couldn't type exitemu.
>Try $_chipset = "plainvga" for now. If that still doesn't work, the
>following can give you a clue:
>
>Run "dos -D+i -o /var/tmp/errors" and analyze /var/tmp/errors to see which
>ports it tries to access and dosemu doesn't understand. You can enable
>then in the "ports" section. Don't do this is if you're paranoid about
>security though.
>
>If it works you probably won't be able to do console switching, except to
>and from X.
>
>Bart
>
>-----
>you could also try a development version of DOSEMU with svgalib support
>compiled-in and $_chipset = "svgalib".
>
>And then still, no guarantees, vesa modes may still be broken, the
>screen can go black, your computer may hang, and you may harm yourself
>and your monitor (depends a lot on the monitor though, but older
>fixed-frequency types are easily damaged). Stas tried hard to get
>DOSEMU working on his ATI Radeon, and Vesa modes do not work for him.
>Neither do they in NT DOS boxes.
>
>Bart