Comment your code, that is: write what you expect you code to do,
row by row, and post it again. You can post your code formatted, by
using tags so it is easier to read for those trying to help you.

I think that this line:
mov r0,0c9h
should be:
mov r0,#0c9h

I dont see where you start the timer or load the TL2 or TH2

Anders