Can anyone help? I have been using the 16C84 and lately 16F84 for a couple of years no problems with PORTB weak pullups. I am moving up to the 16F876 and can't get them to work. The port seems unreliable as an input as it floats about. Using a DVM I measure 1.8volts to ground.

I have a 16F877 which works fine with my code and believe that I am treating the pages correctly when setting up the option and tris registers.

Anyone got a bit of code for setting RBPU up correctly?

Thanks

Jim Fell