[A89] Re: Quite in here... let's discuss something!
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[A89] Re: Quite in here... let's discuss something!
I found a pretty cool optimizing document on the net:
http://www.programmersheaven.com/zone5/cat123/3663.htm
Especially this kind of optimizations I like:
MOVE.B Dx,-(A7)
MOVE.W (A7)+,Dx (16 clocks)
=
LSL.W #8,Dx (22 clocks)
...
Hey cool, thanks to that document another optimalization can be made in the
sprite routine:
andi.b #$F0,d0 ;8
lsr.l #3,d0 ;12
can be optimized to:
LSR.W #4,D0 ;14
ADD.W D0,D0 ;4
...
hmm... CLR sux...
Bye,
Cheiz
References: