Article View: comp.sys.dec
Article #2483R2010 problems while porting an OS to the R2000
From: Jack Jansen
Date: Thu, 29 Nov 1990 13:09
Date: Thu, 29 Nov 1990 13:09
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1356 bytes
I'm currently porting Amoeba, our distributed OS, to the R[23]000. Currently, I'm using the DEC3100 and the SGI 3D/25 as the first machines to port to. Everything runs fine, with one exception: the floating point unit. I keep getting 'Unimplemented Operation' traps at quite unexpected times. After looking at the Ultrix sources I'm getting the impression that the kernel should be ready to execute any FP op, not just the unimplemented ones like sine or sqrt. Is this correct? If so, is there some document that tells me when the FPU fails, and what I can do about it? Or, even better, would someone happen to have one lying around? I'm not really thrilled by the idea of having to implement a full fp emulator.... -- -- Een volk dat voor tirannen zwicht | Oral: Jack Jansen zal meer dan lijf en goed verliezen | Internet: jack@cwi.nl dan dooft het licht | Uucp: hp4nl!cwi.nl!jack
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arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watmath!att!bu.edu!snorkelwacker.mit.edu!bloom-beacon!eru!hagbard!sunic!mcsun!hp4nl!charon!cwi.nlShow Full Headers
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!watserv1!watmath!att!bu.edu!snorkelwacker.mit.edu!bloom-beacon!eru!hagbard!sunic!mcsun!hp4nl!charon!cwi.nl From: jack@cwi.nl (Jack Jansen) Newsgroups: comp.sys.dec,comp.sys.sgi,comp.sys.mips Subject: R2010 problems while porting an OS to the R2000 Message-ID: <2628@charon.cwi.nl> Date: 29 Nov 90 13:09:08 GMT Sender: news@cwi.nl Followup-To: comp.sys.dec Organization: AMOEBA project, CWI, Amsterdam Lines: 20