X-Hacker.org- Ralf Brown's Interrupt List (Part 1,2) - int 21 - dos

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INT 21 - DOS - SEARCH NEXT USING FCB
        AH = 12h
        DS:DX -> FCB (see AH=0Fh)
Return: AL = status
            00h file found
                [DTA] = unopened FCB for file that was found
            FFh file not found
SeeAlso: AH=1Ah,AH=4Fh, INT 2F/AX=111Ch

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