title: Understanding Interrupts / Interrupt Handlers, PIC
body: <p>I understand WHAT an interrupt is, just not how it works or how it is implemented.
  I am using a PIC16F886 and have my switch connected to bit 5 on TRISB.
  With this, I realize that I need to do a bit of setup before an interrupt can occur.
  RB0-3 are the LEDS, and RB4-7 are for the interrupts/switch.</p>
  
  <p>With that, I know that I need to enable interrupts in INTCON by 
  setting bits GIE, INTF, and I believe RBIE and not INTE because RB0 is being used by an LED? But I am not sure.</p>
  
  <p>My main concern is: how does an interrupt trigger? Also, things like org 0x04. What is the significance of that in an interrupt? These are the important details that just elude me, but without them I cannot proceed. Any help would be greatly appreciated.</p>