Hi, I'm trying to memory map an LCD module to the at91m42800A's external bus interface. I currently have the 8-bit device connected to the EBI on chip select 4. I also configured it's memory space (0x50000000-0x50FFFFFF) in startup.s. However, every time I attempt a read/write to this device, the processor aborts. I realize this is a Linker problem, but I'm not sure how to configure it. I'm using the Keil toolset, btw. Do I need to define a new memory CLASS, like XDATA? Any input on this subject would be much appreciated. Cheers, Tracy