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Q38936: DOCERR: [bx].month Example Incorrect in MASM Programmer’s Guide

Article: Q38936
Product(s): Microsoft Macro Assembler
Version(s): 5.0,5.1
Operating System(s): 
Keyword(s): 
Last Modified: 06-MAY-2001

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The information in this article applies to:

- Microsoft Macro Assembler (MASM), versions 5.0, 5.1 
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SUMMARY
=======

The code fragment in section 7.1.3 on Page 147 of the "Microsoft Macro Assembler
Programmer's Guide" causes a warning A4031: "Operand types must match." There is
an error in the example.

Change the line below

  mov ax, [bx].month

to the following:

  " mov ah, [bx].month " (without the quotation marks)

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

Because the structure field month is defined as a byte, the assignment to a word
register generates the operand-mismatch warning message. The change to a byte
register resolves the warning. The following is also acceptable:

  " mov ax, word ptr [bx].month " (without the quotation marks)

Additional query words: 5.00 5.10

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Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM510 kbMASM500
Version           : :5.0,5.1

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