> What they are actually doing is:
>     1) Leaving the top 8 bits alone.
>     2) Setting the next four bits to the 4 msbits of data8bit.
>     3) Leaving the bottom 4 bits alone.
>
 > --- Bob Ammerman

this is the intention to TRIS, SET and RESET 4 bits of PORTB on a 
PIC24HJ128GP502

Thank you
Stephen


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