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From: BILLW@SRI-KL.ARPA
Newsgroups: net.micro
Subject: Re:  Raster graphics display controller chip
Message-ID: <1691@sri-arpa.UUCP>
Date: Fri, 6-Jul-84 22:13:00 EDT
Article-I.D.: sri-arpa.1691
Posted: Fri Jul  6 22:13:00 1984
Date-Received: Sun, 8-Jul-84 01:21:38 EDT
Lines: 8

I would assume that the 7220 is slow as described only when
using the built in commands to do graphics (NEC claims 800ns
per pixel, which isnt bad for drawing lines, but isnt good
for filling large rectangles).  If you dula port your memory,
then the processor can do bitblt type operations directly on
the graphics memory, which ought to speed things up...

BillW