INT 0Ah (10) (IRQ 2)     EGA Display, PC Net, 3278/79

      LAN ADAPTER (called by hardware 8259-1, IRQ 2 - see below)

         On systems equipped with 2 interrupt controller chips (8259), IRQ 2
         is used to support the second interrupt controller.  In this case,
         int 71h (IRQ 9) is used to replace IRQ 2.  Hardware calls to int 71h
         are redirected to this interrupt to maintain compatibility.