My ARM development environment is MDK-ARM Standard edition 4.73.0.0 The problem I faced is related to DMA. More precisely, while debugging (not simulating) lpc2378, I cannot see DMA registers values. I can view memory mapped locations for DMA registers, but they express no change while debugging (and I do change them throughout my program). Also there are no items in Peripherals menu, related to DMA. Any help ?