Forum Discussion

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

Cyclone III Nios problem

I'm using Cyclone III EP3C25F324C8. I'm trying to run the hello world progarm in Nios but it is giving me following error

Verifying 02000000 ( 0%)

Verify failed between address 0x2000000 and 0x200FE63

Leaving target processor paused

My SOPC builder has DDR SDRAM. I had a critical warning in timing analyser saying

Critical Warning: Timing requirements for slow timing model timing analysis were not met. See Report window for details.

Is it because of this warning. Is so how can i solve this problem?

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    18 years ago

    You are getting memory errors due to the timing problems.

    How far did you optimize your design to meet the timing requirememts? Maybe you still can activate some more optimization options and achieve a better timing. (e.g. Perform pyhsical synthesis for combinational logic, register duplication, register retiming, etc).

    If that still doesnt help, maybe place the DDR in a design partition and compile it alone before you add the other modules.

    How bad is your timing? How full is the FPGA?

    Lokla