INT 67 - Virtual Control Program Interface - SET 8259 INTERRUPT VECTOR MAPPINGS
        AX = DE0Bh
        BX = first vector used by master 8259
        CX = first vector used by slave 8259
        interrupts disabled
Return: AH = 00h successful
        AH nonzero: failed
Notes:  This call merely informs the server that the client has changed the
          interrupt mappings.  The client may not change the mappings if they
          have already been changed by the server or another client, and is
          responsible for restoring the original mappings before terminating.