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- From: flanagan@dms.agames.com (Bob Flanagan)
- Subject: Re: 68000, Fast 14 Bit Shift?
- Message-ID: <1992Nov11.170854.20541@dms.agames.com>
- Organization: Atari Games Corporation
- X-Newsreader: TIN [version 1.1 PL6]
- References: <memo.737085@cix.compulink.co.uk>
- Date: Wed, 11 Nov 1992 17:08:54 GMT
- Lines: 31
-
- Adam Pelled (apelled@cix.compulink.co.uk) wrote:
- :
- : In article <568@muller.loria.fr>, eker@loria.crin.fr (Steven Eker) writes:
- : >In article <memo.723415@cix.compulink.co.uk>, apelled@cix.compulink.co.uk (Adam Pelled) writes:
- : >
- : >|>
- : >|> > suba.l a2,a2 ; clear extracted count
- : >|>
- : >|> That's a neat trick :-)
- : >
- : >Why the smiley? how else can you clear an address reg?
- :
- : It was a way of saying thank-you.
- :
- : >|> Thanks for the tips. i'll use them in my code if you don't mind. As Tom
- : >|> Lane pointed out to me in mail; this problem is i/o bound and so there is
- : >|> little point in optimising the code.
- : >
- : >I wondered about this but it depends whether you're decoding from floppy, hard
- : >diskor RAM disk. If you don't need efficiency, don't in code asm in the first
- : >place - unless like me you consider optimising asm as a substitute for
- : >crossword puzzles :-)
- :
- : It seemed like a good idea at the time :-)
- :
- : Adam.
- --
-
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