Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!swrinde!ucsd!ucbvax!ROM.ECSE.RPI.EDU!black
From: black@ROM.ECSE.RPI.EDU (Jerry Glomph Black)
Newsgroups: comp.os.cpm
Subject: Z80 Algorithms
Message-ID: <8910132000.AA03993@rom.ecse.rpi.edu>
Date: 13 Oct 89 20:00:49 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
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  (Jurjen N.E. Bos) writes:
>Maybe somebody is interested in this: I can multiply to unsigned 8-bit numbers
>in 158 clockcycles.  If you can beat me, please let me know.  If you are
>interested, I'll publish the algorithm.
>To make you anxious, I will not tell you the trick right now.
>(By the way: it costs less than 1K.)

Big deal! Use a 64180 (aka Z180) chip, has the MLT instruction, takes 17
clock cycles, or 1.85 micro seconds.  (By the way: it's a 2-byte instruction)

Jerry Glomph Black, 8-bit terrorist