INT 14 - 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. - NON-DESTRUCTIVE READ AHEAD
	AH = 0Ch
	DX = port number
Return: AX = FFFFh character not available
	AX = 00xxh character xx available
SeeAlso: AH=08h"MBBIOS",AH=20h"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."
                                                                                

INT 14 - MBBIOS PACCOM support - BUFFER MANAGEMENT                              
	AH = 0Ch
	ES = segment of buffer to free, or 0000h to allocate new buffer
Return: ES = segment of allocated buffer (if ES=0000h on entry)
Note:	the PACCOM version of MBBIOS uses only ES as buffer address for
	  AH=0Ah and AH=0Bh
SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"