----------
> From: erik <erik@NETWURX.NET>
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: Frequency Multiplier
> Date: Sunday, May 09, 1999 5:58 PM
>
> Roland,
> I've been giving this alot of thought but don't think I can do things
> entirely with an interrupt on
> TMR0 rollover.  I would like to simulate a printing press running at
> 3000 ft/min which would require a pulse
> once every 43usec with a 2500 pulse encoder.

--big snip to keep bandwidth low --

Erik,
why don't you take the output of the encoder and divide it externally
before applying it to the PIC? Quite often I add a cmos 4020 or 4024
or 4040 binary divider to my high speed inputs to 'tame' them down a bit.

The dividers have outputs that divide the input by 2 4 8 16 32 all the
way up to 2^14. Very handy, and dirt cheap.

Hope this helps.
Fr. Tom McGahee