Honored Contributor
Honored Contributorthank, just had tried this from nios wiki :
Starting System Console •From SOPC Builder, click Tools --> Launch System Console •From Nios II 8.0 Command Shell, type "system-console" ◦If you have the Quartus Project handy, try "system-console -jdi=<quartus_proj>.jdi". This will give System Console more information about the JTAG nodes in your system. Reading and Writing Memory with a Nios II Processor This assumes that only one Nios II Processor exists in the system. If one or more Nios II's or a JTAG Avalon Master exists, then in Step 1 you might have to change the list index to get the correct master. 0. <From System Console shell> 1. set nios [ lindex [ get_service_paths master ] 0 ] - might need to change the index number if there are > 1 masters. 2. open_service master $nios 3. processor_stop $nios - the Nios must be in debug mode to access memory 4. master_read_memory $nios 0x00000 4 - Read 4 bytes starting at address 0x00000. 5. master_write_memory $nios 0x00000 [ list 0xaa 0xbb 0xcc 0xdd ] - Writes 0xaa to address 0x0, 0xbb to addr 0x1, etc. 6. close_service master $nios - release SLD Node lock when finished. so with this i could read and write without the need to modify the target design, just plug in the jtag ...
