INTO
Usage: INTO Modifies flags: IF TF
If the Overflow Flag is set this instruction generates an INT 4 which causes the code addressed by 0000:0010 in the interrupt address table (IAT) to be executed.
Interrupt if Overflow
INTO ; CE [8086]
INTO performs an INT 4 software interrupt (see INT) if and only if the overflow flag is set.
The INTO instruction raises the overflow exception, if the OF flag is set. If the flag is clear, execution continues without raising the exception. This instruction allows software to access the overflow exception handler explicitly to check for overflow conditions.
Example:
into