> Keep a software copy of the state of the 4 bits as last serviced

Thanks for the reply.  Could you explain in a little more detail exactly
what you mean here?
Thanks again.

Dan



> > I'd like to have four inputs on RB4 through RB7 used as Interrupt on
> > Change to trigger an input.  Two of those inputs will be pushbutton
> > inputs and two will be
> > pulse monitoring inputs.  My question is that once I do get an
> > interrupt due to a change of level on any one of those
> pins, how do I
> > set it up so I can know exactly which input triggered the
> interrupt??
>
> Keep a software copy of the state of the 4 bits as last serviced.
>

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