PIC Interrupt controller (in detail)

http://www.brokenthorn.com/Resources/OSDevPic.html

Interrupt handlers

INTERRUPTS IN GENERAL ARE GIVEN HERE:
http://unix.stackexchange.com/questions/5788/how-is-an-interrupt-handled-in-linux

SHARED INTERRUPTS DETAILS ARE GIVEN HERE:
http://linuxburps.blogspot.in/2013/09/linux-kernel-interrupts-and-handlers.html

WAYS OF IDENTIFYING INTERRUPTS ARE HERE:
http://www.electronics.dit.ie/staff/tscarff/6800/Interrupts/interrupts.htm