AL = 01 AH = 01 resident portion of PRINT 02 resident portion of ASSIGN 06 get pointer to ASSIGN drive translation table (undoc DOS 3+) 10 resident portion of SHARE B7 resident portion of APPEND C0-FF reserved for user applications DS:DX = pointer to a 5 byte packet containing an priority byte and a DWORD pointer to an ASCIIZ filename DS:DI on return: ES = segment of ASSIGN work area and assignment table (AH=6 only)