masm?

rjwilldohisbest · Nov 30, 2001

Hi All.

I just downloaded the masm32 assembler and have written in an example Hello World prog. I'm using the Qeditor and when I complete the code and select bulid all from the menu tab, I get a fatal error A1000 and a directory that doesn't exist under C:My.asm The target directory is C:/My Documents/assembly/ C:\My.asm directory isn't found through the find files and folders options. Here is what I have:

Listing 1: first.asm
; A simple hello world program.

include \masm32\include\windows.inc ; always first
include \masm32\include\user32.inc ; system include
include \masm32\include\kernel32.inc ; file next

.model small
.stack
.data

Message db "Hello World!!$" ; Message to be displayed.

.code

mov dx, OFFSET Message ; offset of Message is in dx
mov ax, SEG Message ; segment of Message is in ax
mov ds, ax ; ds:dx points to string

mov ah, 9 ; function 9 - displays string
int 21h ; calls the dos service
mov ax, 4c00h ; return to dos DOS

END start ; end here

The assembler cannot locate the asm file?
Do I need to write in autoexec.bat for the save path?
Any advice would be great. Thanks for your time.

RJ

Wody · Nov 30, 2001

Hello,

You are trying to write a DOS program in a Windows-only environment. Write a windows-program, and everything will work fine.
With Masm32, one thing you have to pay attention to is to make your project in a directory below the masm32 directory (for instance C:\MASM32\HELLO).
Also, read iczelion's tutorials, the masm32-versions are included, you can read the texts at

http://win32asm.cjb.net

Wouter Dijkslag

http://www.wody.demon.nl

AmkG · Dec 4, 2001

If you intend to do 16-bit DOS programming, I suggest getting an older version of MASM... "Information has a tendency to be free. Which means someone will always tell you something you don't want to know."

NZRossman · Jan 7, 2002

I downloaded MASM recently from MS's site. It's MASM (ml.exe) version 6.15.
Is this suitable for writing DOS programs?

I have been getting the same error no matter how many tutorials I try, and I know I must be missing something simple.

This is the most basic tutorial code I've tried:

Code:

  .MODEL SMALL
  .STACK 200H
  .CODE
  START:

  mov ah, 2
  mov dl, 1
  int 21h

  mov ah, 4ch
  mov al,00h
  int 21h

  END START

If I try and assemble that, I get the following output from ml.exe:
Assembling: first.asm
Microsoft (R) Incremental Linker Version 6.00.8447
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.

/z2
"first.obj"
"first.exe"
NUL
LINK : warning LNK4044: unrecognized option "z2"; ignored
first.obj : warning LNK4033: converting object format from OMF to COFF
LINK : fatal error LNK1181: cannot open input file "first.exe"

If I just run the linker (link.exe) on the first.obj file, I get the following:
Microsoft (R) Incremental Linker Version 6.00.8447
Copyright (C) Microsoft Corp 1992-1998. All rights reserved.

first.obj : warning LNK4033: converting object format from OMF to COFF
LINK : fatal error LNK1561: entry point must be defined

Any advice would be greatly appreciated...I'm pulling my darn hair out just getting started!

Thanks,
mark

AmkG · Jan 11, 2002

I think:
Your linker is still for Windows... get a DOS linker. I think you can download one from Iczelion's site.

Anyway my post above is a bit incorrect, you can use the newer version, you just need to use a DOS linker.
"Information has a tendency to be free. Which means someone will always tell you something you don't want to know."

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masm?

rjwilldohisbest

Technical User

Wody

Programmer

AmkG

Programmer

NZRossman

Programmer

AmkG

Programmer

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