Compatibility: 1.0+
Expects: AH    25H
AL    interrupt number
DS:DX interrupt vector: address of code to handle an interrupt
                                                                  
Returns: none
                                                                  
Info: Sets the interrupt vector table entry for interrupt number AL to
DS:DX.

Same as storing a 4-byte address into 0000:(AL*4), but lets DOS
know what you're doing, and ensures that no hardware interrupt
occurs while the vector change is taking place.

See Interrupts and BIOS Services for a list of interrupt numbers.

See Also: Fn 35H (get interrupt vector)
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DOS Fn 25H: Set Interrupt Vector