INT 14 - X00 FOSSIL(Fido/Opus/Seadog Standard Interface Layer)  A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use. - STUFF RECEIVE BUFFER
	AH = 21h
	AL = character
	DX = port number
Return: nothing
Notes:	the given character is inserted at the end of the receive buffer as if
	  it had just arrived from the serial port; all normal receive
	  processing (XON/XOFF, ^C/^K) is performed on the character
	fully re-entrant
SeeAlso: AH=20h"X00"
                                                                                

INT 14 - Alloy MW386 v1.x only - RELEASE PHYSICAL COMMUNICATIONS PORTIBM PC Portable (uses same BIOS as XT)
	AH = 21h
	DX = physical port number
Return: AX = status
	    0000h successful
	    FFFFh failed
SeeAlso: AH=20h"Alloy",AH=22h"Alloy"
                                                                                

INT 14 - MultiDOS Plus - TRANSMIT CHARACTER                                     
	AH = 21h
	AL = character to send
	DX = port number
Return: AH = status (see #00350)
Note:	monitor mode must have been turned on with AH=24h before calling
SeeAlso: AH=20h"MultiDOS",AH=22h"MultiDOS",AH=24h"MultiDOS"


(Table 00350)
Values for MultiDOS Plus status:
 00h	successful
 39h	no DSR or CTS
 3Ch	no DSR
 3Bh	no CTS
 41h	no such port
 42h	monitor mode not active
 97h	timed out
                                                                                

INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT CHARACTER, WITH TIMEOUT    
	AH = 21h
	AL = char to send
	DX = port number
	SI = timeout in timer ticks (0000h = default)
Return: after character is sent or timeout expires
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
	  operating system by The Software Link, Inc.
SeeAlso: AH=01h,AH=0Eh"Digiboard",AH=22h"PC-MOS"
                                                                                

INT 14 - HUNTER 16 - EXTENDED CONTROL                                           
	AH = 21h
	AL = command
	    01h force transmission of buffer
	    02h clear transmit buffer
	    03h clear receive buffer
	DX = port (00h COM1, 01h COM2)
Return: AH = extended status
Desc:	executes the command on the selected port
SeeAlso: AH=1Eh"HUNTER",AH=20h"HUNTER",AH=22h"HUNTER",AH=24h"HUNTER"