Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uwm.edu!uakari.primate.wisc.edu!brutus.cs.uiuc.edu!wuarchive!swbatl!texbell!texsun!newstop!sun!sun-bb!khb From: khb@chiba.kbierman@sun.com (Keith Bierman - SPD Advanced Languages) Newsgroups: comp.arch Subject: Re: Sun/Sparc FPUs Message-ID: Date: 5 Jan 90 04:51:28 GMT References: <158@csinc.UUCP> <787@stat.fsu.edu> <42701@lll-winken.LLNL.GOV> <4411@crdgw1.crd.ge.com> <47516@sgi.sgi.com> Sender: news@sun.Eng.Sun.COM Organization: Sun Microsystems Lines: 30 In-reply-to: bruceh@brushwud.sgi.com's message of 5 Jan 90 03:22:29 GMT In article <47516@sgi.sgi.com> bruceh@brushwud.sgi.com (Bruce R. Holloway) writes: In article <4411@crdgw1.crd.ge.com>, barnett@grymoire.crd.ge.com (Bruce Barnett) writes: I'm not sure about the Sun 4/110. Is its FPU a board option? Maybe it used to use earlier Weitek chips, but now uses TI's data path. The 4/110 and 4/260 were shipped long before the 3170 was a gleam in anyone's eye ... FPU1 (or just FPU) was a Weitek 1164(adder)+1165(mult)+sun glue. It was unfortunately an option for the 4/110 (but this sans FPU option was not very popular, for obvious reasons). Early in '89 FPU2 was made available as an upgrade for units already shipped, and made standard for new orders. FPU2 is a TI8847+sunglue. FPU2 is what is employed in the 4/330/70/90 and 4/490 machines. The 3170 is what is customarily employed in the 4/60. It was designed to be a SPARC FPU so there is no glue needed. -- Keith H. Bierman |*My thoughts are my own. !! kbierman@sun.com It's Not My Fault | MTS --Only my work belongs to Sun* I Voted for Bill & | Advanced Languages/Floating Point Group Opus | "When the going gets Weird .. the Weird turn PRO" "There is NO defense against the attack of the KILLER MICROS!" Eugene Brooks