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From: jerry@jvdsys.stuyts.nl (Jerry van Dijk)
Subject: Re: What's wrong with this simple Ada w/ assembly code?
Date: 1999/03/07
Message-ID: <F88Cs4.4u@jvdsys.stuyts.nl>#1/1
X-Deja-AN: 452239872
References: <36ddb9aa.0@silver.truman.edu>
Organization: * JerryWare *, Leiden, Holland
Newsgroups: comp.lang.ada
Date: 1999-03-07T00:00:00+00:00
List-Id: <comp.lang.ada>

Josh Highley (joshhighley@hotmail.com) wrote:

:   I'm trying to link some really simple assembly code with Ada.  I 
: haven't been able to find any good examples or explanations on how to do 
: this.

One example is the ports_io packages that you can find on my homepage,
follow the old link.

: to getting this but I'm not sure what I need to do.  I want to use 
: assembly to position the cursor on the screen.

Why would you want to use ASM for this ? If you are using DOS (which I
suspect), use the conio package that comes with the EZ2LOAD distribution.
If you are using the windows compiler, use the NT_Console package on
my homepage.

: ; I have A86 on my PC so my assembly code is a .com   I have access to 
: ; MASM, though, if needed.  "moveto.asm":

Aha, I'm a long standing A86 user myself. 
Remember that:

a) A86 is a 16-bit realmode assembler (unless you are using the protmode
   features?) while all Ada95 compilers I know are 32-bit (minimum) compilers.

b) A86 uses its own modified Intel ASM syntax, if you are using GNAT, it uses
   the AT&T syntax. See the gcc manual for more information.

:    int 10h
: Here's the Ada code.  I'm using GNAT 3.11, AdaGIDE 6.21, and Win95.

There is no such thing as an interrupt in a Win32 environment. This will
never work.

: not recognized: File format not recognized    gnatmake: *** link failed"

That is correct. GNAT is expecting a 32-bit Win32 PE format .obj file, and 
A86 is generating a tiny model 16-bit realmode DOS .obj file.

--
-- Jerry van Dijk | Leiden, Holland
-- Team Ada       | jdijk@acm.org
-- see http://stad.dsl.nl/~jvandyk