Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Multi-processing w/ Nios(II)

Hello to all - For a while I have been trying to instantiate and run a multiple Nios processor implementation. I have tried several different methods, but the most I have reached is about 70% succ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Jim,

Not sure if this will help, but I've got a dual NiosI/II project working. For NiosII I'm using legacy support for ease of porting and smaller code size.

Basically my primary processor is more full featured and runs out of main sdram and the other processor runs out of a 12KB onchip ram. I communicate with the Primary through JTAG and the secondary over the serial port.

The two trade commands and data from a very simple mailbox system. (in onchip ram)

Now that the secondary processor is debugged and fully functional I can alternately store the code directly as the contents of onchip ram instead of germs. So basically he just comes up and runs waiting for commands from the primary.

Altera has promised enhanced multi-cpu support in upcoming version of NiosII IDE, so I'm going to use the NiosI setup I have now until this improved support emerges.

If you think I could help, ask away.

Ken