I've just completed a neato display module to show formated position
data from any NMEA gps receiver.  It works quite well in a 16F84, and
uses a software UART with interrupt support.

For sale if any interest contact me off-list.

I have had difficulty with interrupts in the past.  Particularily stay
away from the interrupt on change stuff, be careful with the capture/
pwm setup, and SSPI2C stuff is a bitch!  Also, make sure your read all
the application notes on interrupts and make sure you are mindful of
your stimulus signal rise times, period, etc. when coding.

Craig

> -----Original Message-----
> From: pic microcontroller discussion list
> [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Dave VanHorn
> Sent: May 12, 1999 11:51 AM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: Command Parser
>
>
> > They are not hard to write quite fun actually.
> >
> > > What sort of real nasties should be avoided?
> >
> > Interrupts : }}
>
>
> How are interrupts nasty?  I wrote one recently for an F84, had a
> 1mS timer
> int and IIRC a couple others, no trouble at all.
>