Category: security
Flags: Undocumented function
INT 21 - Trusted Access - NB.SYS - SET STATE AH = 40h BX = handle for character device "$$NB$$NB" DS:DX -> state record (see #01414) CX ignored Return: CF clear if successful AX = number of bytes actually written CF set on error AX = error code (05h,06h) (see #01680 at AH=59h/BX=0000h) 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 SeeAlso: AH=3Fh"NB.SYS"