Simulator support for TI Stellaris LM3S6918 MCU

We had created the project in Keil uVison 4( Keil evaluation version) and the selected device is LM3S6918. The test code had been written and compiled the code. In the simulation mode, we are not able to access/ see peripherals of the controller GPIO in the peripherals tab. But we could see only "core peripherals" option in the tab.

While execution the code, it is saying

Acess violation at 0x400FE160 no 'read' permission

please let us know the possible issues

Thank you,
With best regards ,
ramina