On Tue, 16 Apr 2002 14:03:22 -0600, Dwayne Reid wrote:

>Best check your definitions, Wouter.
>
>Microchip changed things a few years back - PC got changed to PCL.  The
>high byte register is PCLATH.
>
>PC and PCL refer to the same thing: the lower byte of the Program =
Counter
>located at address 0x02.  Any write to PCL (also known as PC) takes 2 =
clock
>cycles to execute.  If the simulator does not reflect this, the =
simulator
>is broken and Microchip needs to be told about it so they can fix it.
>

Maybe I didn't check it correctly. A 'movlw low($+5)' followed by a
'movwf PCL' results in the jump occurring and the stopwatch window
indicating that 1 cycle was used.

>Bob - the 2 cycle execution time of any instruction where PCL is =
modified
>is talked about in the instruction set summary portion of the data
>sheet.  For the 16F87x series, that is page 135 of document DS30292C
>

Thanks, I thought I had read that somewhere. I had just forgotten
where.


Regards, Bob

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