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From: miner@dino.cpe.ulowell.edu (Rich Miner)
Newsgroups: comp.sys.amiga
Subject: Re: Dma Design Advice Wanted
Message-ID: <1721@dino.cpe.ulowell.edu>
Date: Sun, 12-Jul-87 23:53:23 EDT
Article-I.D.: dino.1721
Posted: Sun Jul 12 23:53:23 1987
Date-Received: Tue, 14-Jul-87 00:38:13 EDT
References: <941@gryphon.CTS.COM>
Reply-To: miner@dino.cs.ulowell.edu (Rich Miner)
Organization: University of Lowell
Lines: 12

In article <941@gryphon.CTS.COM> jdow@pnet02.CTS.COM (Joanne Dow) writes:
>Otherwise you can get into deep bandini transferring [using DMA] into 
>CHIP ram when running 640x400x4. 

We have a +20MIPS graphics coprocessor sitting on the A2000 bus doing
DMA access to bitmaps in CHIP RAM.  It performs image rotations, edge 
enhancement etc using DMA to get the images in and out of our coprocessor,
including when working with 640x400x4. Sure we get a few less bus cycles, 
but there is enough bandwidth to perform DMA image manipulation and still 
have it look nice.  

See ya at SIGGRAPH :-)