Article View: comp.arch
Article #13283Re: 64 Vs 32
From: ark
Date: Tue, 24 Mar 1987 18:37
Date: Tue, 24 Mar 1987 18:37
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1252 bytes
In article <1500@masscomp.UUCP>, hank@masscomp.UUCP (Hank Cohen) writes: > Well I haven't got a POO here just my trusty yellow card, the System > 370 Reference Summary, but I don't remember any 64 bit integer > operations on system 370. There are decimal operations that can go up > to 16 digits or 8 bytes, mabe more I never actually used them, but > integer operations are limited to 32 bits. True, more or less. There are 64-bit shift instructions. Moreover, it is very easy to simulate a 64-bit add or subtract (3 instructions). Multiply and divide are a good deal harder. In general, the 370 architecture supports 64-bit arithmetic about as well as the 68000 supports 32-bit arithmetic.
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watnot!watmath!clyde!rutgers!princeton!allegra!alice!ark From: ark@alice.UUCP Newsgroups: comp.arch Subject: Re: 64 Vs 32 Message-ID: <6743@alice.uUCp> Date: Tue, 24-Mar-87 13:37:09 EST Article-I.D.: alice.6743 Posted: Tue Mar 24 13:37:09 1987 Date-Received: Thu, 26-Mar-87 06:21:41 EST References: <3810013@nucsrl.UUCP> <28200016@ccvaxa> <1500@masscomp.UUCP> Organization: AT&T Bell Laboratories, Liberty Corner NJ Lines: 13 Keywords: 370 64 bits