Possibly in MPASM format...

main    btfsc PORTB,inbit
           goto main

do1    bsf  maskB,0
          bsf maskB,4
wait1a  movf maskB,W
            movwf PORTB
         btfss PORTB,inbit
         goto wait1a

        ;end of phase 1
        clrf maskB
low   movf maskB,W
        movwf PORTB
        call ResetTimeout
wait1b   btfss PORTB,inbit
             goto wait1b
phase
         call CheckTimeout
         btfsc STATUS,Z
          goto wait1b
          goto main

This seems ok depending on ResetTimeout and CheckTimeout.


Appologies before for the consecutive BSF instructions, I thought they
were referring to a PORT, not a RAM register.

regards

Tony

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