## ALP Programming Guide and Reference

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### .MMX (Select MMX Processor Instruction Set Extensions)

Enables recognition of mnenomics for the MMX instruction set extensions.

Syntax

    . MMX

Remarks

If 586 mnemonics (or later) are not already being recognized, the .MMX directive also causes an implicit .586 directive to be executed.

Issuing any .486 (or earlier) processor selection directive causes recognition of MMX mnemonics to be disabled.

If MMX mnemonics are being recognized, issuing a .586 (or later) processor selection directive does not cause recognition of MMX mnemonics to be disabled. If this behavior is desired, use the .NOMMX directive.

The .MMX directive is not available in M510 mode or M600 mode.