Re: SVGA PC on Apple IIGS

[philip@utstat.toronto.edu (Philip McDunnough)]

In article <2i64gl$k1t@nuscc.nus.sg> ltchean@iss.nus.sg (Lim Thye Chean) writes:
[ ]

>TurboRez does not increase the resolution, but it increase the amount of
>colour you can used. If you think the 320 mode looks nice (especially on
>FTA demo), wait till you see 256 colours from 1/4 million colours in 640 mode.
>I saw TurboRez graphics with my own eyes, and very impressed.

More colours is vry nice. You cn buy an Amiga for the price of the TurboRez  
and get more colours.  The GS needs a double scan'd mode. That is 640x200
scan it twice to give you 640x400, but not all points written to. It's just 
a hardware trick that has worked on other platforms. That and the time it
has taken to support the Ensoniq in a decent way are items to fix. As far
as the FTA I would argue that they did very little good for the GS, in fact
they were too distracting. A waste of time. Tools were always the way to go,
and for sound tool 35 gave people a gift.

>: You have to patch/rewrite QuickDraw II to allow enhenced resolution. 
>: This is not a trivial task because a 600x200 resolution is hardcoded into
>: QuickDraw II. At least that's what the GS experts have told so far. 
>: (Can somebody please tell me that I'm wrong ;-)
>
>Although this is important, but there is not much thing we can do about it.
>Apple is basically gone. But new software can still make use of the card,
>just came out with the card so we can write software for it! Thanks!

If you simply double the scanning rate ( don't address more pixels) then why
would there be problems with QDII?

>: So before you start with the hardware, think about how the GS (i.e. the Toolbox)
>: could use such a card.
>
>Don't think, design it! 

True. It wil happen ...

-- 
Philip McDunnough
University of Toronto
philip@utstat.toronto.edu
[Where sheep may safely graze...]