Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!seismo!rutgers!mit-eddie!bu-cs!m2c!ulowell!dino!miner 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 :-)