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From: tim@nucleus.amd.com (Tim Olson)
Newsgroups: comp.arch
Subject: Re: Integer Multiply/Divide on Sparc
Message-ID: <28548@amdcad.AMD.COM>
Date: 29 Dec 89 15:40:01 GMT
References: <84768@linus.UUCP> <8840004@hpfcso.HP.COM> <1804@l.cc.purdue.edu> <1535@cbnewsi.ATT.COM>
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Reply-To: tim@amd.com (Tim Olson)
Organization: Advanced Micro Devices, Inc., Austin, Texas
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In article <1535@cbnewsi.ATT.COM> reha@cbnewsi.ATT.COM (reha.gur) writes:
| Also note that some SPARC machines do have (or might have) integer mul and
| divide in hardware.

If they do, then they are not Instruction Set compatible.  My copy of
the SPARC architecture manual lists only a MULScc (Multiply Step and
modify icc), and no divide or divide step instructions.  Even if the
hardware is there, it is hard to use without an instruction to specify
the exact semantics of the operation!



	-- Tim Olson
	Advanced Micro Devices
	(tim@amd.com)