Path: utzoo!utgpu!watserv1!watmath!att!occrsh!uokmax!apple!usc!cs.utexas.edu!uunet!cbmvax!daveh From: daveh@cbmvax.commodore.com (Dave Haynie) Newsgroups: comp.arch Subject: Re: 68040 where is it? Message-ID: <14263@cbmvax.commodore.com> Date: 6 Sep 90 21:46:43 GMT References: <33156@cup.portal.com> <25146@boulder.Colorado.EDU> <2451@crdos1.crd.ge.COM> Reply-To: daveh@cbmvax (Dave Haynie) Organization: Commodore, West Chester, PA Lines: 20 In article Chuck.Phillips@FtCollins.NCR.COM (Chuck.Phillips) writes: >Also, with the 040 trapping, then executing software routines for >trancendental functions, I'd _expect_ at least the trancendentals to be >computed slower than a Weitek or 882, in spite of the PR. Why is that? Weitek's don't have built-in trancendentals, either. In fact, at least those based around the most popular Weitek FPU core (the one in the 3167 and ill-fated 3168) don't have as many instructions as the '040 FPU. And the '040 FPU appears to be roughly 2-3 times as fast as a 3167. I have yet to see any numbers on the Motorola trancendental code as compared to a similar '882, though Motorola has been claiming it to be a tad faster. >Chuck Phillips MS440 -- Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests" {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: hazy BIX: hazy Get that coffee outta my face, put a Margarita in its place!