INT 14 - MultiDOS Plus - CLEAR BUFFERS                                          
	AH = 25h
	AL = function
	    00h only clear buffers
	    01h clear buffers and deactivate
	DX = port number
Return: AH = status
	    00h successful
	    3Ah invalid function
	    41h no such port
	    42h monitor mode not active
SeeAlso: AH=20h"MultiDOS",AH=24h"MultiDOS"
                                                                                

INT 14 - HUNTER 16 - CONTROL RS232 DRIVERS                                      
	AH = 25h
	AL = new state of RS232 drivers (00h off, 01h on)
Return: nothing
Note:	this function can be used to save power by turning off the RS232
	  drivers.  It can also be used to turn on the RS232 drivers before
	  connecting to a remote system to avoid "garbage" while the drivers
	  turn on.
SeeAlso: AH=23h"HUNTER",AH=24h"HUNTER",AH=26h"HUNTER"