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From: "Jerry van Dijk" <jvandyk@ibm.net>
Subject: Re: DOS interrupts with GNAT 3.04
Date: 1996/12/25
Message-ID: <01bbf23f$f54dd200$LocalHost@jerryware>#1/1
X-Deja-AN: 205887667
references: <E2qt4t.KAx@nonexistent.com> <1996Dec23.124409.5432@news>
 <dewar.851440688@merv>
organization: *JerryWare HQ*, Haarlem, Holland
newsgroups: comp.lang.ada
Date: 1996-12-25T00:00:00+00:00
List-Id: <comp.lang.ada>


Robert Dewar <dewar@merv.cs.nyu.edu> wrote in article
<dewar.851440688@merv>...

> > I am wondering if there are any provisions (aside from interfacing to
another
> > programming language) in this Ada compiler to access the software
interrupts
> > in DOS.

> The best way to put together a package like that would be to generate
> the necessary int sequences directly using package Machine_Code. Of
course
> this is only done once in the body of the package.

Hmmmm, I didn't know 3.04 for DOS supported Machine_Code...

But even the I wouldn't recommend doing it this way. On a 16-bit real-mode 
compiler, this would be easy.. On a 32-bit protected mode compile (&
runtime)
your code would also have to handle the mode switches (RM<->PM), transfer,
callbacks, etc.

Better use the existing DJGPP code.

As far as fast character I/O under DOS is concerned, If someone has some
server
space left, I have some usefull packages...

Merry Christmas!
Jerry.