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Q74746: FIX: ORG Following ORG Statement with $ May Fail in 6.0

Article: Q74746
Product(s): Microsoft Macro Assembler
Version(s): MS-DOS:6.0
Operating System(s): 
Keyword(s): 
Last Modified: 04-MAY-2001

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The information in this article applies to:

- Microsoft Macro Assembler (MASM), version 6.0 
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SYMPTOMS
========

The Microsoft Macro Assembler (MASM) version 6.0 may generate an incorrect
offset when using the ORG directive following a previous ORG statement that uses
the current-address operator ($). For example, incorrect code will be generated
if the statement "ORG $+1" is placed anywhere before another ORG statement.

STATUS
======

Microsoft has confirmed this to be a problem in MASM version 6.0. This problem
was corrected in MASM version 6.0a.

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

The sample code below demonstrates this problem. You can see in the source
listing that the label "wrongoffset" has an incorrect offset. Instead of having
an offset of 200h, wrongoffset is placed at offset 304h, which is 104h plus the
200h specified in the last ORG statement. Rather than assigning the location to
200h, the assembler added 200h to the current location.

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

  ; Assemble options needed: none

  _text SEGMENT
  one   BYTE ?
        ORG 100h
  two   BYTE ?
        ORG $+2
  three BYTE ?
        ORG 200h
  wrongoffset LABEL word
  _text ENDS
  END

Source Listing
--------------

  0000               _text SEGMENT
  0000 00            one   BYTE ?
                       ORG 100h
  0100 00            two   BYTE ?
                       ORG $+2
  0103 00            three BYTE ?
                       ORG 200h
  0304               wrongoffset LABEL word
  0304               _text ENDS
                 END

Additional query words: 6.00 buglist6.00 fixlist6.00a

======================================================================
Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM600
Version           : MS-DOS:6.0
Solution Type     : kbfix

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

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