programming question

[Al Sten-Clanton]

I'm in the early stages of learning assembly on my Linux box.  Feel free to
correct me, of course, since I'm a beginner on my Linux box and never did
any assembly programming in DOS.  My understanding is that using

Int 0x80

With the appropriate number in the EAX register (and sometimes things in
other registers) is equivalent to the DOS interrupt routines.   

Also, Tyler, thanks for the links.  I rely on two assembly books, "Assembly
Language Step-by-Step: Programming with DOS and Linux, Second Edition," by
Jeff Duntemann, and "Professional Assembly Language," by Richard Blum.  I
now mostly use Blum's book, because it covers more instructions and because
it uses the GNU assembler instead of NASM.  (I much prefer the AT&T syntax
to Intel's.) I have these books by way of a farily expensive online service,
though, and don't think there's a cost-free version of either.  (I do
believe there's at least a separate electronic version of Blum's book that
you can buy.) Blum's book sometimes contains poor explanations, so I hope I
may get some additional help from one or more of the links.

Al
-----Original Message-----
From: speakup-bounces at braille.uwo.ca [mailto:speakup-bounces at braille.uwo.ca]
On Behalf Of Kerry Hoath
Sent: Wednesday, November 12, 2008 6:05 AM
To: Speakup is a screen review system for Linux.
Subject: Re: programming question

Regarding assembler under Linux; there are a few things you should know.
firstly any programs you wrote in dos would need to be completely rewritten,

as Linux does not have a series of interrupt routines like dos;
so you can't call int 10h, int21h etc.
also note that Linux's memory model is flat; and does not use segment 
registers in the way 08x86 assembler does.

there are assemblers under Linux, you want the manpages for as86 and nasm, 
note however that the syntax differs for Linux from dos syntax.

Lame and flac have assembler code if you want to take a look at some.
Regards, Kerry.

----- Original Message ----- 
From: "Bruce Noblick" <brunobrook at columbus.rr.com>
To: "speakup info" <speakup at braille.uwo.ca>
Sent: Wednesday, November 12, 2008 10:10 AM
Subject: programming question


>A few years ago, I took a unix course.  We connected to a linux box to do 
>most of our work.  During that class I found some man pages on the subject 
>I am going to ask about now.  I remember being very qhrilled with this 
>information.  Now that I have my own linux box, I can't find these man 
>pages on it.  I am looking for information on assembler language 
>programming.  I have programs that I have written for DOS and Windows that 
>I would like to port to linux and they are written in Assembler language.
>
> Thanks!
>
> Bruce Noblick
>
>
>  Those who revered the Lord spoke to one another, and the Lord listened 
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>
>  "They will belong to Me," says the Lord who rules over all, "in the day 
> when I prepare My own special property. I will spare them as a man spares 
> his son who serves him."
>
> Malachi 3:16-17
>
> See my web page for contact info and a lot more.
> Here is the address.
> HTTP://HOME.COLUMBUS.RR.COM/bnoblick
> If the above line does not act like a link, try cutting and pasting it to 
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>
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