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From: daglem@solan.unit.no (Dag Lem)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Blitter Speed(?)
Message-ID: <1990Nov1.183003.15095@idt.unit.no>
Date: 1 Nov 90 18:30:03 GMT
References: <1990Oct24.182854.4530@idt.unit.no> <15489@cbmvax.commodore.com>
Sender: news@idt.unit.no (Usenet news admin)
Reply-To: daglem@solan.unit.no (Dag Lem)
Organization: Dept. of CS & T, Norwegian Institute of Technology
Lines: 25

In article <15489@cbmvax.commodore.com>, daveh@cbmvax.commodore.com (Dave Haynie) writes:
|> Incidently, most of the speed you get out of ANIM files is CPU based, not
|> blitter based.  ANIMs tend to load into Fast memory, being decompressed into
|> Chip by the CPU to a double buffered display to give you nice, clean looking
|> animation.  It's possible to do some of the same kind of animation on a Mac.
|> The blitter speed is what's responsible for things moving within chip memory,
|> like the speed of your window moving, menus dropping, or bobs dashing about
|> in a video game.

I understand I look like a total jerk to you. ANIM files? In the original article I said I was writing assembler routines using the blitter to draw filled polygons, and I was not lying, either. And yes I use double buffering, too.
3D rotating solid objects whizz around on my screen. But I'd like them to go faster!

Anyway, I'll stop whining about blitter speed. I tend to compare the Amiga to more expensive hardware (e.g. Dec 2100), because that's what I use every day at the university. I know this is wrong, the Amiga is in a different league. It's just that it's such a nice little machine, so sometimes I forget.
Forgive me!
|> -- 
|> Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests"
|>    {uunet|pyramid|rutgers}!cbmvax!daveh      PLINK: hazy     BIX: hazy
|> 	Standing on the shoulders of giants leaves me cold	-REM

-- 
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