When the ARM7TDMI core is in debug state, you examine the core and system state by forcing the load and store multiples into the instruction pipeline.

Before you can examine the core and system state, the debugger must determine if the processor entered debug from Thumb state or ARM state, by examining bit 4 of the EmbeddedICE debug status register. When bit 4 is HIGH, the core has entered debug from Thumb state, when bit 4 is LOW, the core has entered debug entered from ARM state.