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From: 178504488@excalibur.UUCP
Newsgroups: comp.sys.amiga
Subject: Amiga Chip problem?
Message-ID: <63@excalibur.UUCP>
Date: Mon, 2-Mar-87 21:19:13 EST
Article-I.D.: excalibu.63
Posted: Mon Mar  2 21:19:13 1987
Date-Received: Thu, 5-Mar-87 21:43:50 EST
Organization: SWORD, Villanova University
Lines: 23


	I just started using an Amiga at Villanova University.  Although
I was supposed to be doing some development on Mult-Forth I had the urge
to use Flight Sim II.  So I booted up only to come up with a picture of
a run way intermittently covered by static, with static covering up even
the engine sound.  This was by no means analog static or interference, but
"digital static" as in static literally being drawn unto Video and Audio 
Ram locations.  It seemed that maybe the blitter was corrupting the data
it was redrawing since pictures started going all over the place as the static
eventually took over the entire screen and crashed the Amiga.  I tried
games such as Artic Fox, One-on-One, Marble Madness (the wave section)
with similar results.  However, non-animated games such as Chessmaster 2000
showed know problem.  I tried the line drawing on Aegis Draw and the shaded
circles and rectangles in Deluxe Paint with no problem.  Also I took note
that there was no problem whatsoever with window manipulation and all graphic
demos (Boing, Ray Juggler, Lines, Dots, Rect, ect.).  Another interesting
fact to stirr things up was that Flight Sim II only uses the 68000 for 
animation.
	Maybe its the sound chips?  No, Speech works and so does Instant
Music-- at least until I start drawing the first line off notes.  So whats
going on!  The CPU is dated October 85.

			Wilson Cheung