## MMPM/2 Device Driver Reference

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### AUDIO_CONTROL (42h) - Description

This IOCtl is used to change the state of the adapter or selected characteristics of the adapter. The adapter state is changed by the following usIOCtlRequest values:

AUDIO_START (Not required for MMPM/2.)
AUDIO_STOP (Not required for MMPM/2.)
AUDIO_PAUSE (Not required for MMPM/2.)
AUDIO_RESUME (Not required for MMPM/2.)
AUDIO_CHANGE

Adapter characteristics are changed by the usIOCtlRequest value AUDIO_ CHANGE.