[Ktechlab-devel] instruction cycles

[David Saxton]

Fixed. Thanks for the report :)

On Friday 17 February 2006 14:28, deifo at ono.com wrote:
> Recently I was experimenting with little programs and KTechLab, but
> sometimes strange things happen.
> For example, why is this program producing a perfect square wave in RA4
> output?
>
> loop:
>     BSF       PORTA, 4
>     BCF       PORTA,4
>     GOTO      loop
>
> According to the pic specification, GOTO should take 2 cycles and B?F
> should take only 1 cycle.
>
> To correct this, we must add two NOP's after BSF, is this correct?
> With this little program we should have a perfect square wave on the RA4
> pin.
>
> loop:
>     BSF       PORTA, 4
>     NOP
>     NOP
>     BCF       PORTA,4
>     GOTO      loop
>