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Re: 256 Colors
- Subject: Re: 256 Colors
- From: lscharen@d.umn.edu (Lucas)
- Date: 30 Nov 2003 15:22:15 -0800
- Newsgroups: comp.sys.apple2
- Organization: http://groups.google.com
- References: <Mehyb.64527$do1.7912@twister.austin.rr.com> <Pine.LNX.4.44.0311300555060.18408-100000@localhost.localdomain>
- Xref: archiver1.google.com comp.sys.apple2:1121
> > If Apple IIgs can be able to handle 256 colors at 320x200 resolution,
> > 32,000 pixels can start at E0/2000 through E0/9D00 and another 32,000 pixels
> > can start at E1/2000 through E1/9D00. It will be total $FA00 or 64,000
> > pixels. It will look like real PC VGA 320x200x256.
>
> It would be a nice feature for an enhanced IIgs, for sure. :\
If you have a Video Overlay Card, it can be coaxed into an interlaced
Super Hi-Res mode of 320x400 or 640x400 using Banks E0 and E1. This
only works because the VOC has its own copy of memory for all the IIgs
graphics modes.
There was a demo for this I downloaded several years back which showed
a monochrome Mac OS screenshot @ 640x400 displayed on the IIgs.
Technically impressive, but not practical as the interlaced video mode
caused a *lot* of flicker.
-Lucas