how to program/download NIOS II program by using an external processor?

Hi, dsl. Thanks for your reply.

I still have some questions about the usage of Avalon MM master and the implementation method.

--- Quote Start ---

You need to write an Avalon MM master that is connected external pins and use that to write to the memory.

--- Quote End ---

Does "the memory" include all of the following memory: FPGA Flash, FPGA EPCS, FPGA off-chip SRAM/SDRAM, and FPGA on-chip RAM?

Could I only define a private interface/protocol to communicate with an Avalon MM master?

Could I use the the JTAG interface to download/programme NIOS II software program just like the nios2 command tools does? If using JTAG is possible, Could you point some related documentations out to me? Thanks.

htbegin