Path: utzoo!utgpu!watmath!clyde!att!rutgers!gatech!cwjcc!mailrus!ncar!ames!oliveb!amiga!boing!dale
From: dale@boing.UUCP (Dale Luck)
Newsgroups: comp.sys.amiga
Subject: Re: Non-distruction graphics
Keywords: video blitter
Message-ID: <522@boing.UUCP>
Date: 1 Dec 88 10:11:16 GMT
References: <6287@dayton.UUCP> <1011@microsoft.UUCP>
Reply-To: dale@boing.UUCP (Dale Luck)
Distribution: na
Organization: Boing, Milpitas, Ca.
Lines: 15

In article <1011@microsoft.UUCP> glenns@microsoft.UUCP (Glenn Steffler) writes:
>
>Albeit, the blitter would have to do a READ and a WRITE to XOR, but it's
>quick at them type things, it was made for it.
>

Regardless of drawing mode, the blitter needs to read and write. We are
only modifying one bit in a word and all accesses to chip mem with the blitter
are word accesses.

-- 
Dale Luck     Boing, Inc. {uunet!cbmvax|pyramid}!amiga!boing!dale
Although I do contract work for Amiga-LosGatos, my opinions probably
don't represent those of Commodore or its management or its engineers,
but I think the world would be a better place if they did.