From:	Ron Barbosa <rbarbosa AT mediaone DOT net>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Assembly woes...
Date:	Fri, 16 Oct 1998 01:49:47 -0400
Organization:	MediaOne -=- Northeast Region
Lines:	26
Message-ID:	<3626DE7B.3CB51048@mediaone.net>
NNTP-Posting-Host:	rbarbosa.ne.mediaone.net
Mime-Version:	1.0
X-Mailer:	Mozilla 4.06 [en] (WinNT; I)
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp
Reply-To:	djgpp AT delorie DOT com

Hey all...Does anyone know of a good (preferably online) tutorial for
AT&T style x86 assembly?  I've found a few quickies from the DJGPP site,
but they're more tailored for people who know assembly, but not the AT&T
syntax.  My assembly is infantile-to-nonexistant.  I've seen a few
online mini-books and howtos but they are for Intel syntax.

Any help would be great...the particular snippet of assembly I'm trying
to convert/understand is listed below.  If anyone out there would be
kind enough to explain it to me, and give me some insight to converting
to AT&T style, that'd be real cool (remember my assembly talent sucks).

-- BEGIN ASSEMBLY --
les di,video_buffer
mov al,BYTE PTR color
mov ah,al
move cx,320*200/2
rep stosw
--  END ASSEMBLY  --

This is a snippet from Black Art of 3d Game Programming.  It's an inline
routine.  video_buffer is an unsigned char[] that points to a000:0000
(mode 13 video RAM), and color is an unsigned int that stores a color
index (0-255).

Thanks in advance...
--RB

- Raw text -