Path: utzoo!attcan!uunet!zephyr.ens.tek.com!tekcrl!tekgvs!toma
From: toma@tekgvs.LABS.TEK.COM (Tom Almy)
Newsgroups: comp.lang.forth
Subject: Re: Forth on the Intel 80386
Message-ID: <6982@tekgvs.LABS.TEK.COM>
Date: 1 Mar 90 15:33:53 GMT
References: <571.UUL1.3#5129@willett.UUCP>
Reply-To: toma@tekgvs.LABS.TEK.COM (Tom Almy)
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 20

In article <571.UUL1.3#5129@willett.UUCP> ForthNet@willett.UUCP (ForthNet articles from GEnie) writes:
> The 80386 modes that allow access to all of memory will cause problems 
> when used with DOS, DESQview or Windows.  Just be aware that it can be 
> done, but the problems go beyond the assembly language part of it. 

If the 80386 protected mode program is run using a DOS emulator such as
Phar Lap DOS EXTENDER, then you have no problems running under DOS, DESQview
or Windows/286 (but you can't run under Windows/386). Laboratory Microsystems
UR/Forth 386 uses the Phar Lap product, which yields a 32 bit Forth with the
performance of the equivalent 16 bit Forth, plus the luxury of a flat address
space (and virtual memory, too -- you can't run out of dictionary space as long
as you have sufficient free disk space!)

I have used the Phar Lap product on several applications (a Smalltalk-80 
interpreter, XLISP, and two versions of the SPICE simulation program) with
excellent results.

Tom Almy
toma@tekgvs.labs.tek.com
Standard Disclaimers Apply