Tony Nixon wrote:

> I would try to avoid multiple consecutive writes to the TRIS register
> using BSF intructions.
> Try
>         movlw b'11100001'
>         movwf TRISA

  Indeed, even safer,

        movlw b'11100001'
        tris  PORTA

  .. avoids the need to use the bank select bits at all.
--
  Cheers,
        Paul B.