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Q24958: Hexadecimal Numbers Must Begin With a Digit Between 0 and 9

Article: Q24958
Product(s): Microsoft Macro Assembler
Version(s): 5.0,5.1,6.0,6.0a,6.0b
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, 6.0, 6.0a, 6.0b 
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SUMMARY
=======

With the Microsoft Macro Assembler, a hexadecimal number must begin with a digit
between zero and nine. This is so that the assembler can distinguish between
something that should be a number and something that should be a label.

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

Assembling the following code will result in the following errors, since the
assembler will assume that ABh is a label

  MASM 5.0, 5.1: error A2009: Symbol not defined: ABh
  MASM 6.0: error A2006: undefined symbol: ABh

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

  ;Assemble options needed: none

     .model small
     .code

        mov ax, ABh

      end

Additional query words: kbinf 5.00 5.10 6.00 6.00a 6.00b

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Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM510 kbMASM600 kbMASM500 kbMASM600a kbMASM600b
Version           : :5.0,5.1,6.0,6.0a,6.0b

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