When saving status during interrupts on the 16c74,
  Microchip recommends the following:
movwf   W_Temp         ;Copy W to TEMP register, could be bank one or zero
swapf   STATUS, w      ;Swap status to be saved into W
bcf     STATUS, RP0    ;Change to bank zero, regardless of current bank
movwf   STATUS_TEMP    ;Save status to bank zero STATUS_TEMP register
:(ISR)
swapf   STATUS_TEMP, w ;Swap STATUS_TEMP register into W
                      ;(sets bank to original state)
movwf   STATUS         ;Move W into STATUS register
swapf   W_TEMP, f      ;Swap W_TEMP
swapf   W_TEMP, w      ;Swap W_TEMP into W

  Why not:
swapf   W_Temp         ;save w with nibbles reversed, could be either bank
swapf   STATUS, w      ;get status and reverse the nibbles
bcf     STATUS, RP0    ;set bank 0
movwf   STATUS_TEMP    ;save old status with nibbles reversed
:(ISR)                ;interrupt service routine
swapf   STATUS_TEMP, w ;get old status
movwf   STATUS         ;restore old status (and bank register)
swapf   W_TEMP, w      ;get back w with correct nibble order

By pre-swapping w, it looks like I can save a step.

  I also like to:
movf    FSR, w        ;get indirect file select register
movwf   Temp_Fsr, f   ;save indirect files select register
:(ISR)                  ;interrupt routine
movf    Temp_Fsr, w   ;get saved indirect file select register
movwf   FSR, f        ;restore indirect files select register
clrwdt               ;clear watchdog timer

What do you guys think?

Eric Johnson- Champaign, Illinois USA.
lazrbite@pdnt.com