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Q119517: New Keywords Near16, Near32, Far16 and Far32 in MASM

Article: Q119517
Product(s): Microsoft Macro Assembler
Version(s): 6.1,6.11,6.1a
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 6.1, 6.1a 
- Microsoft Macro Assembler (MASM), version 6.11 
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SUMMARY
=======

In MASM 6.1 there are four new distance specifiers: near16, near32, far16, and
far32.

A near pointer consists of an offset. A near16 pointer is a near pointer that
consists of a 16 bit offset. A near32 pointer is a near pointer consisting of a
32 bit offset. A far pointer is a pointer that consists of both a segment and an
offset. A far16 pointer is a far pointer that consists of a segment and a 16 bit
offset. A far32 pointer is a far pointer consisting of a segment and a 32 bit
offset. Segments are always 16 bits. Note: near32 and far32 pointers are only
available on 386 and successive processors.

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

The properties of the new distance specifiers are summarized by the following
table:

 pointer    size in bits        contain            example
 -------    ------------    -----------------    -----------
 near16       16 bits           offset_16            IP
 near32       32 bits           offset_32            EIP
 far16        32 bits       segment:offset_16       CS:IP
 far32        48 bits       segment:offset_32       CS:EIP

Additional query words: kbinf 6.10

======================================================================
Keywords          :  
Technology        : kbMASMsearch kbAudDeveloper kbMASM610 kbMASM611 kbMASM610a
Version           : :6.1,6.11,6.1a

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