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Altera_Forum's avatar
Altera_Forum
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16 years ago

Implementing onchip dual access ram

Hi,

I am trying to implement an onchip memory as a framebuffer. Although I like to do some image improvement using vhdl code.

My problem is, when I add the support for dual access ram in the SOPC Builder, i get an error that both slaves have the same adress range, as it should be.

So could you give me a hint, where I am wrong?

Thanks a lot for your help

Best wishes

3 Replies

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    Are both slaves connected to the same master? In that case you'll have this error. The fabric can't know what slave to connect to.

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    No, one is connected to the CPU Data and Instruction master, the other one is connected to the "External Bus to Avalon Bridge".

  • Altera_Forum's avatar
    Altera_Forum
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    16 years ago

    --- Quote Start ---

    My problem is, when I add the support for dual access ram in the SOPC Builder, i get an error that both slaves have the same adress range, as it should be.

    --- Quote End ---

    Did you try to set manually different address range for each port?