INT 60 u - HP 95LX System Manager - RESET COMMUNICATIONS CHANNEL
        DI = 0E06h
        STACK:  2 WORDs unused dummies (for calls from high level languages)
                WORD    comm channel handle
                WORD    reset options (see below)
Return: ???
        STACK unchanged

Bitfields for reset options:
 bit 0  reset line
 bit 1  flush transmit buffer
 bit 2  flush receive buffer
 bit 3  reset modem
 bit 4  reset receiver's ^S state
 bit 5  reset transmitter's ^S state

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