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Article #39976Re: 68040 vs 80246 (Was Re: Xerox sues
From: rob
Date: Tue, 19 Dec 1989 14:41
Date: Tue, 19 Dec 1989 14:41
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> Does the 040 have the FPU built in? I'm told the memory manager is >there, but I have heard nothing reliable on the 040. My understanding, based on what little information there is, is that the 68040 will have a built in FPU that is similar to the Weitek 3167. That is, it will do simple operations (add, subtract, multiply, divide, loads, compares) very quickly in hardware, while relying on software handlers to execute more complex instructions like transcendentals. Of course, until about a year ago, the 80486 FPU was rumored to be of such a design, too. In reality, the 486's FPU is, except for speed improvements, mostly unchanged from the 80387.
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arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!tut.cis.ohio-state.edu!purdue!bu-cs!mirror!prism!robReferences:
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!tut.cis.ohio-state.edu!purdue!bu-cs!mirror!prism!rob From: rob@prism.TMC.COM Newsgroups: comp.sys.ibm.pc Subject: Re: 68040 vs 80246 (Was Re: Xerox sues Message-ID: <206900149@prism> Date: 19 Dec 89 14:41:00 GMT References: <18213@netnews.upenn.edu> Lines: 14 Nf-ID: #R:netnews.upenn.edu:-1821300:prism:206900149:000:668 Nf-From: prism.TMC.COM!rob Dec 19 09:41:00 1989