INT 16 - pcANYWHERE III - COMMUNICATIONS I/O THROUGH PORTIBM PC Portable (uses same BIOS as XT) AH = 7Eh AL = subfunction 01h port input status Return AX = 0 if no characer ready, AX = 1 if character ready 02h port input character Return AL = received character 03h port output character in CX 11h hang up phone SeeAlso: AH=7Ch