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documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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     If the word/byte (w) bit is set, use 16-bit or 32-bit operands
     under the .386 or .486 directive. If clear, use 8-bit operands.
                                    -♦-