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Altera_Forum
Honored Contributor
Honored ContributorMultiprosessor Nios systems
Where can I find examples about communicating multiprosessor systems? I need information howto create fifos and howto use shared memory at the Nios system. What would be the best (easiest) way to tra...
Altera_ForumHonored Contributor
Honored ContributorMike,
Great protocol. Almost exactly what we do on our dual Coldfire board, but we use a physical DPR that generates the interrupts and provides the mailbox. I didn't want to use IRQ's in this design because I need the second processors ISR latency for its most important task to be as jitter free as possible. I've found with the LA that IRQ activity increases jitter even for the highest priority ISR's. In my case the second processor can check for new messages whenever its convenient because command response latency of several ms is fine. hassu3, Mike's IRQ approach would really just tell the processor it was time to check his mail. You still may need the mailbox or something like it to transfer commands and data. Ken
