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From: ROKICKI@su-sushi.arpa
Newsgroups: net.micro.amiga
Subject: Blitter
Message-ID: <1907@caip.RUTGERS.EDU>
Date: Thu, 17-Apr-86 09:52:04 EST
Article-I.D.: caip.1907
Posted: Thu Apr 17 09:52:04 1986
Date-Received: Sat, 19-Apr-86 03:23:21 EST
Sender: daemon@caip.RUTGERS.EDU
Organization: Rutgers Univ., New Brunswick, N.J.
Lines: 15

From: Tomas G. Rokicki <ROKICKI@su-sushi.arpa>

I have an application which requires extremely fast blitter operations.
The 420 microsecond overhead for each call of BltTemplate() is too high
by a factor of ten.  Two questions:
	a)  Is there a way around this with a C function?  I have searched
through all the manuals, and have come up with nothing . . .
	b)  I currently plan to write a short assembly language function
to write to the blitter registers directly.  How can I prevent this from
mucking with the operating system?  How do I tell when the blitter is free,
and how do I lock it for my use?  Do I have to disable interrupts, or what?

All I need is a simple blt operation from one bit plane to another.  Any
help on this would be greatly appreciated . . .                      -tom
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