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Altera_Forum
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16 years ago

Multi Nios

Hi folks. I have a strong doubt, that my will not work and i want to avoid it. In my system i have 2 Nios processors.I use EPCS flash memory, which stores 2 images. First is woking with data, ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Slava, I'm using just one Nios but changing the content of EPCS over ethernet is implemented there.

I will try answer your questions.

1. Yes it's possible. You have to know the start address of the firmware image. The best is when it starts at a sector boundary.

2. No idea

3. No you can use the alt_write_flash_block() or alt_write_flash() function from Altera HAL API. Data transmission is more save if you use an additional checksum.

Last Question: I think you have just one bootloader because only one EPCS device controller core can be instantiated in each FPGA design. The boot loader code is stored in a small onchip RAM in epcs controller.

Jens