en:docs:dos:api:int21:33

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Subfunction Description Version
00 get current extended break state 2.0+
01 set state of extended Ctrl+C/Ctrl+Break checking 2.0+
02 GET AND SET EXTENDED CONTROL-BREAK CHECKING STATE 3.0+
03 GET CURRENT CPSW STATE 3.4/4.0
04 SET CPSW STATE 3.4/4.0
05 GET BOOT DRIVE 4.0+
06 GET TRUE VERSION NUMBER 5.0+