X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 2f - multiplex - dos 3+ internal

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INT 2F - Multiplex - DOS 3+ internal - SET YEAR/LENGTH OF FEBRUARY
        AX = 121Bh
        CL = year - 1980
Return: AL = number of days in February
Note:   requires DS to be set to the DOS code segment
SeeAlso: INT 21/AH=2Bh

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