Newtec o Amize ...

[Petr Krenzelok <Petr.Krenzelok@trz.cz>]

zrejme to uz nekdo z vas cetl, ale alespon pro ty ostatni - hazim tady
stranku, kde je nejaky prepis reci CEO Newtecu a jeho obdivu k Amize.
Zda se, ze to, ze Newtec konci s Amigou jsou zvasty. A vsem kdo rikaji,
ze je chipset na <peep> doporucuji precist pasaz o copperu, zakladnim
predpokladum pro genlocking, nativnim modum pro TV, apod.
Jeste prikladam z ICOA jeden mail od Dr. Kittela (toho casu Pios)

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http://www.sharbor.com/amiga/news/19971210/02.html
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ICOA -

n 14 Dec 97 at 4:44, Stefan Burstroem wrote:
> 
> There is nothing that special in the old chips that makes dragable screens
> that much easier to do.

Umm, cough, Copper "nothing special"? You see, to get
draggable screens on common gfx chips, you have to copy
the whole screen contents to some frame buffer, where
the complete screen resides in its several parts.
With Copper, such copy actions are not necessary.

I don't know whether the alternative is possible with
such gfx chips, to replace the Copper functionality
by some rasterline interrupt and let the interrupt
routine change the video source pointers on the fly.
Does that work fast enough? I doubt this a bit.
And of course you need such a rasterline interrupt in
first place, which is not standard.

> Provided a decent structure, it should be no
> problem to get dragable screens on a normal gfx board too, although it
> won't be possible to do different resolutions etc.

Well, with a good modern blitter, one could use scaling
during the copy to the final frame buffer. But this of
course only adds to the load.

Best regards, Dr. Peter Kittel          // Visit www.pios.de
PIOS Computer AG, Hildesheim, Germany \X/  E-Mail to: peterk@pios.de