Well I don't know about the compass bits, but I always use the 16F628A 
as an external / daughter MCU.  It has pleanty of features and is dirt 
cheap.  You could  have it running several sensors if you like.  However 
I do hear great things about the F878 (If I recall correctly), never 
used one though.

Out of interest, what is the project?

Justin.

Vic Fraenckel wrote:

>I am new at pic programming and would like to interface a pic of some flavor 
>to either a cmps03 or Vector2x compass module. I could use some advice as to 
>the feasibility of doing this and also of which pic would be the best for 
>this. I will be passing the directional data on to a main system processor 
>(not a PC), most likely via an  RS232  connection, approximately once every 
>10 seconds. The amount of data passed would be less than 10 bytes and would 
>be on-demand from the main processor.
>
>Any enlightenment will be appreciated.
>
>TIA
>
>Vic
>________________________________________________________
>
>Victor Fraenckel - The Windman
>victorf ATSIGN windreader DOTcom
>KC2GUI
>
>      Home of the WindReader Electronic Theodolite
>                               Read the WIND
>
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>-Count Oxenstierna (ca 1620) to the young King Gustavus Adolphus
>
>"People sleep peacefully in their beds at night only because rough
>men stand ready to do violence on their behalf."
>-George Orwell
>
>
>
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