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andy25's avatar
andy25
Icon for Occasional Contributor rankOccasional Contributor
2 years ago
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Nios V, Max10, N25Q512A QSPI, XIP

Hello all. I have this Max10 Dev Kit, it has 512Mbit N25Q512A QSPI flash. I have a Nios V/m processor, and if I execute out of on-chip memory everything works fine. I'd like to try Execute in plac...
Embedded Applications Layer
  • aghoras's avatar
    aghoras
    2 years ago

    Have you tried changing the addressing mode to 4 byte addressing? The default is 3-byte and is configured through the Control Register (0x0) of the IP. It could be that the 512mb memory requires more than 3-bytes to access.

aghoras's avatar
aghoras
Icon for New Contributor rankNew Contributor
2 years ago

Have you tried changing the addressing mode to 4 byte addressing? The default is 3-byte and is configured through the Control Register (0x0) of the IP. It could be that the 512mb memory requires more than 3-bytes to access.

  • andy25's avatar
    andy25
    Icon for Occasional Contributor rankOccasional Contributor
    2 years ago

    Yay! That works!

    Reading the N25Q manual I could have sworn the default would be 3-byte addressing.

    I have Feature Digit 8 which notes: "Enter 4-byte address mode and exit 4-byte address mode supported."

    Feature Digit 7 (which I don't have) notes: "4-byte addressing mode is the default at power-up"

    Oh well, it works now.

    Thanks for the help!

    -Andy