>What am I doing wrong  ? Have I misunderstood something about the 84's
>architecture or simulator ?

You are misunderstanding the use of the PCLATH register when a GOTO
instruction is used.

With the C84 and F84, the PCLATH has no effect on GOTO or CALL
instructions. The entire address for these are contained within the
instruction itself.

If you are really stuck with addressing check out the web site below.


Regards

Tony

For the beginner....
PicNPoke Multimedia 16F84 Simulator Assembler, and Tutorial.
Now with PicNPlay circuit simulator.
Plus PicNPost animated Addressing Tutor.

http://www.dontronics.com/picnpoke.html