KnowledgeBase Archive

An Archive of Early Microsoft KnowledgeBase Articles

View on GitHub

Q26803: FIX: Incorrect Checksum

Article: Q26803
Product(s): Microsoft Macro Assembler
Version(s): 5.0
Operating System(s): 
Keyword(s): 
Last Modified: 06-MAY-2001

-------------------------------------------------------------------------------
The information in this article applies to:

- Microsoft Macro Assembler (MASM), version 5.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

Microsoft Macro Assembler (MASM) version 5.0 may generate an incorrect checksum
for one of the records in the generated object module.

RESOLUTION
==========

If the starting address is removed from the END directive, the problem goes
away.

STATUS
======

Microsoft has confirmed this to be a problem in MASM version 5.0. This problem
was corrected in MASM version 5.1.

MORE INFORMATION
================

The following sample code can be used to demonstrate the problem.

Sample Code
-----------

  ; Assemble options needed: none

  _TEXT SEGMENT PARA PUBLIC 'CODE'
    ASSUME CS:_TEXT
  start:
    mov ax, 4C00h
    int 21h
  _TEXT ENDS

  END start ; removing the label 'start' from the END directive
            ; stops the incorrect checksum from being generated

Additional query words: 5.00 buglist5.00 fixlist5.10

======================================================================
Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM500
Version           : :5.0
Solution Type     : kbfix

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 1986-2002.