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From: slackey@bbn.com (Stan Lackey)
Newsgroups: comp.arch
Subject: Re: What is the ratio of programs sizes CISC versus RISC
Message-ID: <64657@bbn.BBN.COM>
Date: 14 Jun 91 15:16:49 GMT
Article-I.D.: bbn.64657
References: <pb.676737175@atperf.idca.tds.philips.nl> <3429@crdos1.crd.ge.COM> <11830@ncar.ucar.edu>
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Reply-To: slackey@BBN.COM (Stan Lackey)
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>In article <3429@crdos1.crd.ge.COM>, davidsen@crdos1.crd.ge.COM (Wm E Davidsen Jr) writes:
>|>         "Most of the VAX instructions are in microcode,
>|>          but halt and no-op are in hardware for efficiency"

Once when looking at machine X microcode listing, I noticed the microcode
word for no-op had the comment 

 ; do nothing

Just under it was the microword for the halt instruction.  The comment was:

 ; do even less

Just wasting a little bandwidth.  -Stan