I have the following problem. I want program the AT91SAMX512 directly by JTAG and ICEBreaker. I have activated the Scan Chain 2 (ICEBreaker) and can read and write the ICEBreaker-registers. For example, I write two different values in Watchpoint_0_und_1_Address_Registers (0x08 and 0x10) and can this values read correctly. But, if I write any command in to 'Debug Comms Data'-register (0x05), the 'Debug Comms Control'-register(0x04) got for ever the value 0x100000001, so that it appears for me, that the ICEBreaker is not active and the command is not fetched. Is there what I should some more activate?