>2)  I am changing from PIC 74 to 77 due to space requirements.  Is
>there anything that I ought to look out for?

BRGH = 1 WORKS!

You need to store the extra context information in your interrupt entry
routine.

Other than that, it's just a fat '74.

Andy

==================================================================
Andy Kunz - Montana Design - 409 S 6th St - Phillipsburg, NJ 08865
          Hardware & Software for Industry & R/C Hobbies
        "Go fast, turn right, and keep the wet side down!"
==================================================================