21E0 INT 21 - Digital Research DOS Plus - CALL BDOS
21E0 INT 21 - OS/286, OS/386 - INITIALIZE REAL PROCEDURE
21E0 INT 21 - DoubleDOS - MENU CONTROL
21E0 INT 21 - VIRUS - "Jerusalem", "Armagedon" - INSTALLATION CHECK
21E0 INT 21 - Novell NetWare, Alloy NTNX - PRINT SPOOLING
21E0--SF06 INT 21 - Novell NetWare - PRINT SERVICES - GET PRINTER STATUS
21E0--SF09 INT 21 - Novell NetWare - PRINT SERVICES - SPECIFY CAPTURE FILE
21E00F INT 21 - VIRUS - "8-tunes" - INSTALLATION CHECK