INT 60 u - HP 95LX System Manager - SET COMMUNICATIONS SETTINGS
        DI = 0E14h
        STACK:  2 WORDs unused dummies (for calls from high level languages)
                WORD    comm channel handle
                DWORD   pointer to comm settings (see below)
Return: ???
        STACK unchanged
SeeAlso: INT 60/DI=0E15h

Format of comm settings:
Offset  Size    Description
 00h    BYTE    dial type ('T' tone, 'P' pulse)
 01h    WORD    baud rate divisor (115200/baud_rate)
 03h    BYTE    parity (00h none, 08h odd, 18h even, 28h mark, 38h space)
 04h    BYTE    stop bits (00h one, 04h two)
 05h    BYTE    data bits - 5
 06h    BYTE    software handshake
                01h none, 02h XOFF/XON, 04h XOFF/any, 08h ENQ/ACK
 07h    BYTE    infrared (01h off, 02h on)
 08h    BYTE    duplex (01h half, 02h full)
 09h    BYTE    echo (01h echo, 02h no echo)