INT 14 - X00 FOSSIL - EXTENDED LINE CONTROL INITIALIZATION
        AH = 1Eh
        AL = break status
            00h if break
            01h if no break
        BH = parity (see below)
        BL = number of stop bits
            00h one stop bit
            01h two stop bits (1.5 if 5 bit word length)
        CH = word length (see below)
        CL = bps rate (see below)
        DX = port number
Return: AX = port status code (see AH=00h)
Notes:  this function is intended to exactly emulate the PS/2 BIOS AH=04h call
        if the port was locked at X00 load time, the appropriate parameters are
          ignored
SeeAlso: AH=00h,AH=04h"SERIAL I/O"

Values for parity:
 00h    no parity
 01h    odd parity
 02h    even parity
 03h    stick parity odd
 04h    stick parity even

Values for word length:
 00h    5 bits
 01h    6 bits
 02h    7 bits
 03h    8 bits

Values for bps rate:
 00h    110
 01h    150
 02h    300
 03h    600
 04h    1200
 05h    2400
 06h    4800
 07h    9600
 08h    19200

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