Hi,
The simulator doesn't simulate peripherals.
Extract of the Targeting_56800E.pdf manual:
The CodeWarrior Development Studio for Freescale 56800/E Digital Signal Controllers includes the Freescale DSP56800E Simulator.
This software lets you run and debug code on a simulated DSP56800E architecture without installing any additional hardware.
The simulator simulates the DSP56800E processor, not the peripherals.
In order to use the simulator, you must select a connection that uses the simulator as your debugging protocol from the Remote Debugging panel.
Regards
Pascal