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From: nick@hp-sdd.UUCP (Nick Flor)
Newsgroups: net.micro.amiga
Subject: Blitter question
Message-ID: <385@hp-sdd.UUCP>
Date: Thu, 14-Aug-86 12:06:46 EDT
Article-I.D.: hp-sdd.385
Posted: Thu Aug 14 12:06:46 1986
Date-Received: Fri, 15-Aug-86 05:48:32 EDT
Distribution: net
Organization: Hewlett Packard, San Diego
Lines: 34
Keywords: Will anyone respond to this one?


Since Commodore is not giving out anymore info on the Blitter than what is
in the RKM, let me ask a more specific question:

I'm controlling the blitter via assembly language/own-disown-wait-blitter
routines/writing directly to the regs. etc.

 have the following 16 bit quantity:

0000000000001111

And a shift value of 3.  I'm doing a direct copy from A to D. ($F0)

The result of the blitter operation is:

1110000000000001.

Is this what I should expect (or am I doing something wrong)?

(I thought the blitter would be smart enough to do 2 16-bit writes, ie.
 000000000000001 1110000000000000 I mean, that's what the RKM implies
 in the section on shifting)

-- 
Standard disclaimer:  
  The above opinions are my own and do not necessarily reflect those of my 
  employers.

Nick V. Flor 
..hplabs!hp-sdd!nick

"What's going down in this world, you got no idea.  Believe me."

The Comedian