## Physical Device Driver Reference

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### ASYNC_SETLINECTRL (42h) - Set Line Characteristics

Category:
IOCTL_ASYNC (01h)
Function:
ASYNC_SETLINECTRL (42h)
Description:
Set Line Characteristics

Select an item:

    Description
    Parameter Packet Format
    Data Packet Format
    Returns
    Remarks

This function sets the line characteristics (data bits, parity, stop bits).