Error while debugging using system-console

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Hi,

I am trying to debug a design containing Nios II on a Stratix V FPGA. When debugging with system-console, while trying to do a memory read, i get the following error :

% master_read_memory $nios 0x00000 4

error: master_read_memory: com.altera.systemconsole.internal.plugin.jtag.oci. Nios2DebugException: Target is broken and needs to be reset

while executing

The RAM in my design doesn´t seem to work. How can I solve this?

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Did you stop the NIOS operation before the command being executed? I guess it corrupts in the middle of NIOS firmware.