## Input/Output Device Driver Reference

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### Generic IOCtl Interface

The parallel port device driver supports a set of generic IOCtl functions. Refer to the parallel port control IOCtl commands in the OS/2 Physical Device Driver Reference for a list and detailed description of these functions.

Note: From the command line, a user can start the MODE command to perform the parallel port control functions Set/Query Frame Control and Set/Query Infinite Retry. See the description of the MODE command in the OS/2 Command Reference.