--------S-1404-------------------------------
INT 14 - SERIAL - EXTENDED INITIALIZE (CONVERTIBLE,PS)
	AH = 04h
	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)
SeeAlso: AH=00h,AH=1Eh,AX=8000h"ARTICOM"

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
--------S-1405-------------------------------
INT 14 - SERIAL - EXTENDED COMMUNICATION PORT CONTROL (CONVERTIBLE,PS)
	AH = 05h
	AL = function
	    00h read modem control register
	      Return: BL = modem control register (see below)
		      AH = status
	    01h write modem control register
	      BL = modem control register (see below)
	      Return: AX = status
	DX = port number
Note:	also supported by ArtiCom
SeeAlso: AH=00h,AH=1Fh,AX=8000h"ARTICOM",AH=FBh

Bitfields for modem control register:
 bit 0	data terminal ready
 bit 1	request to send
 bit 2	OUT1
 bit 3	OUT2
 bit 4	LOOP
 bits 5-7 reserved