DOS Fn 25H: Set Interrupt Vector

                                                         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

          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)
          TSR/Popup Functions
          DOS Functions