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Int 21 Fn 40 U - Trusted Access - Nb.sys - Set State [y]
AH = 40h
BX = handle for character device "$$NB$$NB"
DS:DX -> state record (see AH=3Fh"NB.SYS")
CX ignored
Return: CF clear if successful
AX = number of bytes actually written
CF set on error
AX = error code (05h,06h) (see AH=59h)
Program: Trusted Access is a security and access-control package by Lassen
Software, Inc.; NB.SYS is a device driver to prevent the user from
terminating CONFIG.SYS or AUTOEXEC.BAT with Ctrl-Break
See Also: AH=3Fh"NB.SYS"
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