X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 2f - multiplex - share

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INT 2F - Multiplex - SHARE - INSTALLATION CHECK
        AX = 1000h
Return: AL = 00h  not installed, OK to install
             01h  not installed, not OK to install
             FFh  installed
BUG:    values of AL other than 00h put DOS 3.x SHARE into an infinite loop
          (08E9: OR  AL,AL
           08EB: JNZ 08EB) <- the buggy instruction (DOS 3.3)
        values of AL other than described here put PCDOS 4.00 into the same
          loop (the buggy instructions are the same)
SeeAlso: INT 21/AH=52h

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