Re: VGA cards on 2gs ?

["Steve Mentzer" <steve@crackershack.com>]

Yes, there was a card known as "SecondSight", which worked quite well. It
was a VGA adapter for the IIgs that would allow you to plug in a standard
SVGA monitor and run software without modification.

It had a couple of glaring problems. First it simply "read and
reconstructed" the video to get standard IIgs video out to work on an SVGA
monitor. Because of this, there was a lot of "redrawing" activity, and games
wouldn't work too well.

Second, GS/OS was largely hardcoded to use either 640x200 or 320x200 video.
To get it to work in SVGA resolutions (640x400, 800x600) would require a
complete rewrite of quickdraw, as well as the font-rendering routines.

Basically, to sum it up, GS/OS was largely incapable of running resolutions
higher than 640x200 because it was never designed to!





"Leslie Ayling" <layling@intercoast.com.au> wrote in message
news:3c6ce634$1@news.rivernet.com.au...
> Hi All,
>
> Since there was some recent mention of Apple II gfx cards,
> has anybody here attempted to get a VGA/SVGA card to
> interface to a IIgs?
>
> Some of the older 8bit S3 cards shouldn't be too hard to interface
> I would imagine.
>
> Cheers,
> Leslie
>
>
>