Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!decvax!decwrl!pyramid!hplabs!utah-cs!b-davis
From: b-davis@utah-cs.UUCP
Newsgroups: net.micro.ns32k
Subject: Re: 80x86 vs. 680x0 (was Re: National's 32332)
Message-ID: <3826@utah-cs.UUCP>
Date: Wed, 18-Jun-86 17:35:42 EDT
Article-I.D.: utah-cs.3826
Posted: Wed Jun 18 17:35:42 1986
Date-Received: Fri, 20-Jun-86 03:30:50 EDT
References: <746@usl.UUCP> <253@spar.UUCP> <2793@sdcrdcf.UUCP>
Reply-To: b-davis@utah-cs.UUCP (Brad Davis)
Distribution: na
Organization: University of Utah VCIS Group
Lines: 24

In article <350@valid.UUCP> eric@valid.UUCP (Eric Burger) writes:
>We went one step further - John Reiser at Valid took SVS 68010 pascal
>object code and munged the bits into 80286 code. Guess what? The 286
>code was 15%-20% smaller. You can't complain about diferent compilers,
>libraries, etc. in this example. As fas as speed is concerned, the 286
>was comperable to the 68010 ONLY UP TO 64K worth of text and data. After
>that point, the 286 fell flat on its face.

We have a large software package (about 100,000 lines in multiple
programs) that we are supporting on both a VAX running BSD4.3 and on
PC's and clones. We are using the BSD pcc and Wizard C.  Wizard C
consistantly gives better code sizes than any other C compiler for the
PC's.  The library is very fine grained (we have sources anyway).  Since
our programs are over 300k long we use the large model.  The PC programs
are from 1.2 to 1.6 times larger than the equivalent VAX programs.  Most
of the programs fall into the 1.4-1.5 range.  The sizes also seem to
correspond to programmers.  Good programmers get 1.2-1.3, normal
programmers get the 1.4-1.5 range.  This really hurts when you are
running out of memory on a 512k PC, and most of your programmers are
normal.
-- 
Brad Davis	{ihnp4, decvax, seismo}!utah-cs!b-davis	
		b-davis@utah-cs.ARPA
One drunk driver can ruin your whole day.