My original reply to the following post was bounced back, so I am re-posted
and hoping I can sneak through.........................
**************hopefully*****************************************
Hi,
>I was interested in doing an frequency counter. Great ! There is an application
>note in the Microchip book (frequency counter, I think the number is an592).
>I read it, and I didn't understand how it works. I thought the best to do is
>to get the file from Microchip and simulated it.
>But, the file was in Postscript. So, I had to type it !
>After simulation, my conclusion is (but perhaps I'm wrong):
> This file can't work !!
> Example: movlw B'10000100' seams to be the instruction to configure the entry
>  port !
>So, my questions are:
> Am I wrong, or some files (or perhaps the most of them) of the Microchip
> book were not tested ? If so, where can I find a list of file tested ?
>
>Thanks for reply
>
>Yves Bergeon
>
>I have come to the same conclussion re AN592, however I am using the "it's
the thought that counts" and used the general idea, i.e. gating the RTCC
(TMR0 on the 'c74, which I'm using) and the use of a I/O port to pull  the
external frequency source low when you are not counting and a fixed software
delay to set the gate period.  I am also interested in inputs from others on