Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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The LABEL, PROC, EXTRN, LOCAL, and COMM directives can all use the type
specifiers listed in the first column. The second and third columns show
corresponding data directive (if any) and number of bytes per element.
 
BYTE       DB       1
WORD       DW       2
DWORD      DD       4
QWORD      DQ       8
TBYTE      DT      10
FAR                 4
NEAR                2
PROC               code size of memory model (2 or 4)
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