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Altera_Forum's avatar
Altera_Forum
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18 years ago

about verify failed in sdram

hi,when i debug my program in niosII, i select the option Download program to Ram in Debugger page, but it always tips in the Console

"Verifying 01000020 ( 0%)

Verify failed between address 0x1000020 and 0x10081E3

Leaving target processor paused" (as my sdram is set at this address)

i don't kown why. Is there any problem with my configure ? Normally how we optimize our configure settings.

12 Replies

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    hi, now the verify is ok. but when i enter the debug page, it always shows"Thread [0](running)", so in this case i can't debug by step over/in. how i will do to solve this problem?

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor

    It means your SDRAM interface isn't working for some reason (probably timing). I don't know what chip you are using but my approach is usually to create a piece of onchip memory in your SOPC system and run the NIOS out of the onchip memory. Then write a tiny piece of test code that exercises your SDRAM interface. You can also use the mem_test example application.

    Jake