>Below are the changes made: (just added two BSF)
>LOOP
>   BSF  PORTB, 7 ; port B, bit7:=High
>   BSF  PORTB, 7 ; port B, bit7:=High
>   BSF  PORTB, 7 ; port B, bit7:=High
>   BCF  PORTB, 7 ; port B, bit7:=Low
>GOTO  LOOP  ; Waveform:

This is really still not great.  You are probably better off doing:

Loop
bsf PORTB, 7
nop
nop
bcf PORTB, 7
goto Loop

The last line is OK relative to BSF/BCF due to the 2-cycle goto instruction.

--Andrew
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