INT 00H: Division Overflow

 The CPU automatically executes this interrupt after a DIV or IDIV is
 performed and the result (quotient) of a division operation will not fit
 into the destination.  This includes division by 0.  For instance...

            mov   ax,4000H  ;dividend
            mov   bl,2      ;divisor is byte so destination is byte (AL)
            div   bl        ;4000H/2 is 2000H which will not fit in AL
                            ;  so INT 00H is executed
 ...or simply:...
            mov   bx,0
            div   bx        ;any division by 0

    Note: Division-by-0 errors on the numeric coprocessor may be routed
          through the NMI.  See INT 02H.

See Also: ROM-BIOS Functions
          DOS Functions
          Process Control Functions