Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site unisoft.UUCP Path: utzoo!linus!decvax!decwrl!amdcad!lll-crg!lll-lcc!unisoft!fnf From: fnf@unisoft.UUCP (Fred Fish) Newsgroups: net.micro,net.micro.pc Subject: Re: Re: IBM's new 32 bit machine - not an 80386? Message-ID: <1@unisoft.UUCP> Date: Tue, 7-Jan-86 17:18:53 EST Article-I.D.: unisoft.1 Posted: Tue Jan 7 17:18:53 1986 Date-Received: Wed, 8-Jan-86 20:51:08 EST References: <216@utastro.UUCP> <210@ism780c.UUCP> <399@l5.uucp> <168@intelca.UUCP> Reply-To: fnf@unisoft.UUCP (Fred Fish) Organization: UniSoft Systems; Berkeley, CA Lines: 26 Xref: linus net.micro:12196 net.micro.pc:6206 In article <168@intelca.UUCP> kds@intelca.UUCP (Ken Shoemaker) writes: >> Software emulation would work OK too, especially if the processor is fast >> enough. I suspect a 68020 can emulate an 8088 faster than the 8088 (though > >To a point...I doubt that it could emulate the 8088, picking up all the nuances >of the flags on arihmetic operations and still be faster, I mean, it would >have to do nibble arithmetic! The software 8088 emulation mode on the AMIGA is reported to execute IBM PC programs at about 40% of the speed of a real 8088. Given that a 68020 is about 2-3 times faster than a plain 68000, I would expect the equivalent 68020 emulation to run at 80-120% of a real 8088 under the same conditions. Of course this is all just speculation... -Fred =========================================================================== Fred Fish UniSoft Systems Inc, 739 Allston Way, Berkeley, CA 94710 USA {ucbvax,dual}!unisoft!fnf (415) 644 1230 TWX 11 910 366-2145 =========================================================================== -- =========================================================================== Fred Fish UniSoft Systems Inc, 739 Allston Way, Berkeley, CA 94710 USA {ucbvax,dual}!unisoft!fnf (415) 644 1230 TWX 11 910 366-2145 ===========================================================================