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joe306's avatar
joe306
Icon for Occasional Contributor rankOccasional Contributor
7 years ago

NIOS II Instruction Execution Time?

Hello, I'm running my NIOS II on a Cyclone V FPGA. The clock for the NIOS is 100Mhz. Is there a way I can make a rough estimate how long it takes the NIOS processor to execute a single instruction? Say I wanted to estimated how long it would take to write to on-chip memory? Would it take a single 100Mhz clock cycle?

Thanks,

Joe

1 Reply

  • Ahmed_H_Intel1's avatar
    Ahmed_H_Intel1
    Icon for Frequent Contributor rankFrequent Contributor
    7 years ago

    Hi,

    The NIOS II is a processor that executes a C-code (like normal hardware processor), to know the execution time you have to know the machine language generated from your C-code plus the timeout of all system blocks.

    BTW running a simple code of few lines doesn't take much of time but also no processor executes a full command in one single clock cycle.