Problem with A port on 18F2550

[skimask]

I have a problem with my a port on the 18F2550 device. When i use this code the a port will toggle all the time. What do I wrong.
I have the following code:........................

Since your last thread was about 3v3 PICs, I have to ask...
What is your power supply? And are you running a PIC18F2550 or PIC18LF2550?

And what's this line for?
---------Baudrate CON T9600 ' Voor communicatie met RFID-module---------