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Article #12266Re: 64 Bit addressing on R4000?
From: Steve Ritacco
Date: Wed, 26 Jun 1991 15:49
Date: Wed, 26 Jun 1991 15:49
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From what I know about the R3000, the only integer unit instruction affected by 64-bit operation would be the shift instructions which only have a 5 bit field for shift amount. Clearly you would have to use the register varient of the shift instructions, but other than that all the instructions would work for 32 or 64 bit opperands. I'm under the impression that the instruction set was layed out for minimal affect on word size.
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arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!hplabs!hpcc05!hpdmd48!sritaccoReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!sdd.hp.com!hplabs!hpcc05!hpdmd48!sritacco From: sritacco@hpdmd48.boi.hp.com (Steve Ritacco) Newsgroups: comp.arch Subject: Re: 64 Bit addressing on R4000? Message-ID: <14900025@hpdmd48.boi.hp.com> Date: 26 Jun 91 15:49:08 GMT References: <8083@uklirb.informatik.uni-kl.de> Organization: Hewlett Packard - Boise, ID Lines: 6