From:	"John M. Aldrich" <fighteer AT cs DOT com>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: segment overrides
Date:	Wed, 15 Apr 1998 20:10:25 -0400
Organization:	Two pounds of chaos and a pinch of salt.
Lines:	23
Message-ID:	<35354C71.74CA@cs.com>
References:	<28A3AF71AD2 AT fharga DOT sun DOT ac DOT za> <35353886 DOT 6924 AT cs DOT com>
NNTP-Posting-Host:	ppp228.cs.com
Mime-Version:	1.0
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

John M. Aldrich wrote:
> 
> Of course you don't need that before every memory access; only those
> which transfer data to conventional memory using the _farpokeX/_farpeekX
> convention.  And you only need the segment override once per looping
> construct, as long as you don't call any library code that alters the
> value of %fs.

Never mind; you are probably right.  I did some research after posting
this and it is apparently necessary to use .byte 0x64 before each
operation to tell the CPU to use %fs instead of %ds for the mov
instruction.

Sorry for the misinformation.


-- 
---------------------------------------------------------------------
|      John M. Aldrich       |"Men rarely (if ever) manage to dream |
|       aka Fighteer I       |up a god superior to themselves. Most |
|   mailto:fighteer AT cs DOT com   |gods have the manners and morals of a |
| http://www.cs.com/fighteer |spoiled child."    - Lazarus Long     |
---------------------------------------------------------------------

- Raw text -