Xref: utzoo comp.sys.ibm.pc:41806 alt.msdos.programmer:1009
Path: utzoo!utgpu!watserv1!watsci!batman
From: batman@watsci.uwaterloo.ca (Marcell Stoer)
Newsgroups: comp.sys.ibm.pc,alt.msdos.programmer
Subject: Re: 386 instructions
Message-ID: <580@watserv1.waterloo.edu>
Date: 11 Jan 90 22:26:05 GMT
References: <13346@garnet.BBN.COM>
Sender: daemon@watserv1.waterloo.edu
Reply-To: batman@watsci.UUCP (Marcell Stoer)
Distribution: comp
Organization: University of Waterloo, Waterloo Ontario, Canada
Lines: 30

In article <13346@garnet.BBN.COM> hlison@bbn.com (Herb Lison) writes:
>Does anyone know if there are any compiler options with MSC5.1 which
>let the compiler generate 386 specific instructions where appropriate.
>The documentation I have only shows the /G2 option for generating
>286 code.  Specifically, it would be nice to take advantage of
>32 integer multiplies and shifts, or is this something the compiler
>does automatically?
>
>Thanks,
>
>Herb Lison

If you want to issue 386 instructions, you will need a compiler that
generates 32 bit code.  Microsoft has no such compiler.  There are companies
that provide these though.  One is WATCOM ( presently the best C compiler
around, refer to BYTE, PC Magazin, INFO World...etc), another is
Metaware.  These compilers generate 386 (32 bit) specific code that can
make use of all the memory your machine has (passed the 640K limit of
DOS).  To run the executables you will also need a DOS-Extender that can
switch your 386 to protected mode in order to make use of the 32 bit utilities.
Phar Lap has a good DOS-Extender.  These 386 compilers generally cost around
$650-900 (think twice) and the DOS-Extender is $495 (when I bought it 2 months
ago).  If anyone is interested for more info on WATCOM you can e-mail me
and I'll pass the info along.

--

		Marcell			BITNET : Batman@Watsci.uwaterloo.ca

===============================================================================