Easy Question (for you pro's): I want to read a non-interrupt driven
port on a PIC16C74 and detect a rising or falling edge. Any ideas on
the best way to implement this? I'm quite the rookie here -this is
my first design. Reasoning tells me to :

               Read the port
               Store it's value
               Read it again
               Compare the values

If the values are different - i've detected the edge change. Does
this make sense? How could I implement this in C?

Thanks -