RBIL61 - INT D4 - PC-MOS/386 v5.01 - GET PORT AND BAUDRATE INFORMATION

INT D4 - PC-MOS/386 v5.01 - GET PORTIBM PC Portable (uses same BIOS as XT) AND BAUDRATE INFORMATION
	AH = 20h
	BX = task ID (FFFFh for current task) (see AH=19h)
Return: CF clear if successful
	    CX = port number (0000h if none)
	    DI:SI = baudrate (if CX nonzero)
	CF set on error
	    AX = error code (see #01680 at INT 21/AH=59h/BX=0000h)
SeeAlso: INT 14/AH=0Ch"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."