Retro video games delivered to your door every month!
Click above to get retro games delivered to your door ever month!
X-Hacker.org- Interrupts & Ports - Norton Guide http://www.X-Hacker.org [<<Previous Entry] [^^Up^^] [Next Entry>>] [Menu] [About The Guide] 


        DoubleDos - INSTALLATION CHECK  (INT 21h, E4h - DoubleDos)

        Entry:
          AX = E400h
        Return:
          AL <> 00h if DoubleDos is active
          AL = 02h if caller is running in the invisible partition
Online resources provided by: http://www.X-Hacker.org --- NG 2 HTML conversion by Dave Pearson