procedures with wait statements -- problem

[daveysurphlis]

hi there
I am trying to write a prodcure to be used in a test bench.
this prodecure would allow me simulate a micro processor write.
I am passing in a clock, address, data and outputting modified address and some control signals and data.
I get a problem using the following line
wait until rising_edge(CLK)
how can I writte this process as I need it syncronous to clk ?

Cheers
Davey