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NIOS-->(S)CDMA_ENCODING(M)-->(S)CDMA_DECODING-->slave
Now , while building my own system in SOPC builder.
i added components in this order.
NIOS
ONCHIP MEMORY
CDMA_ENCODING
CDMA_DECODING
SLAVE(SD RAM).
I am getting these errors:
cpu_0:nois ii instruction master cannot address memories over 2^32. cpu_0:nois ii data master cannot address memories over 2^32. memory map cannot fit within the addressable memory space of the nios ii data master which is restricted to 31 adress bits..
my both address and data masters are 32-bit only.
what is the cause of this error, and suggest me the possible solution .
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- NIOS does not support 32 bit address space, only 31 bits. The slave interface needs to cut down by at least one bit...likely more since if you have a 31 bit slave device connected to the NIOS, then it will consume the entire address space, leaving no address space for anything else...such as memory to read the software program.
- Does the slave interface of 'CDMA_ENCODING' really have 2^32 addressable memory locations? That's an awful lot. How many registers/ports are really addressable? That will define how many bits wide the address bus needs to be.
Kevin Jennings
Honored Contributor
