Strange PortA behavior on 18F PIC

[Terry]

Wow Bruce!!!
What a great explanation, can this same phenomenon also happen on other ports, or is this just more unique to port A, being the typical Analog A/D port where the input capacitances are slightly different from the other ports.
Thanks again for the great explanation.
Terry

[Bruce]

It can happen on any port. Read-modify-write isn't prejudice at all..;o}