From: Nate Eldredge Newsgroups: comp.os.msdos.djgpp Subject: Re: AMD processors and assembly language Date: 12 Mar 2000 16:31:25 -0800 Organization: InterWorld Communications Lines: 22 Message-ID: <83zos3d82q.fsf@mercury.st.hmc.edu> References: <01JMWIIY2ZT69ASSJ4 AT SLU DOT EDU> NNTP-Posting-Host: mercury.st.hmc.edu Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: nntp1.interworld.net 952907617 38328 134.173.45.219 (13 Mar 2000 00:33:37 GMT) X-Complaints-To: usenet AT nntp1 DOT interworld DOT net NNTP-Posting-Date: 13 Mar 2000 00:33:37 GMT User-Agent: Gnus/5.0802 (Gnus v5.8.2) Emacs/20.5 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Damian Yerrick writes: > On Sat, 11 Mar 2000 10:22:23 -0600 (CST), GAMMELJL AT SLU DOT EDU wrote: > > > In high precision arithmetic, the assembly language commands > >mul, div, and adc are essential. In the 486 architecture, these > >commands are efficient. In the alpha architecture, they do not exist. > > WTF? Compaq's Alpha doesn't have multiply, divide, and add? According to the Alpha Architecture Handbook (ftp://ftp.digital.com/pub/Digital/info/semiconductor/literature/alphaahb.pdf), there is no integer divide instruction, and no add-with-carry instruction. The Alpha does have an integer multiply instruction, and also a floating-point divide. That's what RISC is about. :) -- Nate Eldredge neldredge AT hmc DOT edu