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AH = 67h AL = Doorway mode 00h turn off DOS redirection 01h turn on DOS redirection
Return:
AH = 80h if Doorway is actively redirecting output AL = 80h if Doorway was already in requested mode
Program: Doorway is a program by Marshall Dudley which allows most DOS programs to run as a BBS door without modification
Note: To perform an installation check without changing the redirection state, if is necessary to restore the original mode if AL was not 80h on return
See Also: INT 10/AH=BBh"Doorway"
Category: Uncatagorized - Int 16h - D
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