Article View: comp.arch
Article #20828Re: Complex Instructions
From: Rob Kleinschmidt
Date: Tue, 18 Apr 1989 18:56
Date: Tue, 18 Apr 1989 18:56
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Once in a while, the atomic nature of a complex instruction can have real advantages over a sequence of fast single cycle instructions. Because the complex instruction cannot be interrupted in mid sequence, there is no need to modify processor priority. This can allow better manipulation of shared data items (linked lists, counters, etc.) especially by user level processes. Anybody got a good way for a user execute an un-interupted sequence of a dozen RISC instructions ?
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Path: arc1-ca.pugleaf.net!utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!bbn!apple!voder!tolerant!rob From: rob@tolerant.UUCP (Rob Kleinschmidt) Newsgroups: comp.arch Subject: Re: Complex Instructions Summary: Benefits from atomicity of complex instructions. Message-ID: <4101@tolerant.UUCP> Date: 18 Apr 89 18:56:28 GMT References: <57252@yale-celray.yale.UUCP> Organization: Tolerant Systems Inc., San Jose California Lines: 7