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Altera_Forum
Honored Contributor I
729 Views

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
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3 Replies
Altera_Forum
Honored Contributor I
33 Views

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
Honored Contributor I
33 Views

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
Honored Contributor I
33 Views

 

--- 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?
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