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sonycman's avatar
sonycman
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21 hours ago

Dual Port Nios V BSP error

I've created a Nios V qsys with dual port onchip memory in Quartus Pro 26.1

True dual port, first port connected to instruction manager, second - to data manager.

Base addresses automatically assigned the same to both.

 

But i'am unable to create the BSP due to memory regions overlapping error!

Of course the addresses are same - its the same physical onchip memory!

 

Any solytion, please?

Regards, Vlad.

Embedded Applications Layer
Nios Cpu

1 Reply

  • SteveK_Arrow's avatar
    SteveK_Arrow
    Icon for New Contributor rankNew Contributor
    1 hour ago

    Hi Vlad

    You can manually select a different address for the s2 port of the dual port RAM that does not overlap the address for port s1. This will resolve the issue. Double click in the base column  of the s2 port to modify the address. I built an example to verify this and have inserted a few snapshots below.