Fabio Pereira <PICLIST@mitvma.mit.edu> wrote:

> > If your program don't use interrupts then add a RETFIE at offset
> > 0x0004 to let the program countinue even when a unexepted
> > interrupt occures.
>
> That's OK, but remember: the RETFIE itself is not a good interrupt
> handler: you must clear the interrupt flag too, or the CPU will start
> an endless loop. Best way is something like that:
>
>     ORG 0x0004
>     CLRF    INTCON  ; now you know that all flags and interrupt enable
>                     ;bits are clear
>     RETFIE

A better way is:

    ORG 0x0004
    RETURN

-Andrew

=== Andrew Warren -- aiw@cypress.com
=== Principal Design Engineer
=== Cypress Semiconductor Corporation
===
=== Opinions expressed above do not
=== necessarily represent those of
=== Cypress Semiconductor Corporation

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