Int 67 Fn DE0B  - Virtual Control Program Interface - Set 8259 Interrupt   [E]

   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.

See Also: AX=DE0Ah,INT 2C/AX=002Ah