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Int 0x21, AH=0x33

2133 INT 21 - DOS 2+ - EXTENDED BREAK CHECKING
213302 INT 21 - DOS 3.x+ internal - GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE
213303 INT 21 - DOS 3.4/4.0 - GET CURRENT CPSW STATE
213304 INT 21 - DOS 3.4/4.0 - SET CPSW STATE
213305 INT 21 - DOS 4.0+ - GET BOOT DRIVE
213306 INT 21 - DOS 5+ - GET TRUE VERSION NUMBER
213306 INT 21 - CBIS network - NETWORK REDIRECTOR - ???
213307 INT 21 - Windows95 - SET/CLEAR DOS_FLAG
21330F INT 21 - VIRUS - "Burghofer" - INSTALLATION CHECK
213341 INT 21 - Diet Disk v1.0 - INSTALLATION CHECK
2133DA INT 21 - VIRUS - "CoffeeShop" - INSTALLATION CHECK
2133DB INT 21 - VIRUS - "CoffeeShop" - GENERATE RANDOM NUMBER
2133DC INT 21 - VIRUS - "CoffeeShop" - DISPLAY "LEGALIZE CANNABIS" GRAPHIC
2133E0 INT 21 - VIRUS - "Oropax" - INSTALLATION CHECK

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  Copyright 2000   by Ralf Brown     Updated Jul 2000