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Altera_Forum
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14 years ago

Nios system address mapping issues

hello , I created my own system like this.. NIOS-->(s)CDMA_ENCODING(M)-->(s)CDMA_DECODING(M)-->Slave in my system address lines are 16bit wide datalines are 32bit wide. N...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

I think you are still missing a point: the master address range must be equal or greater than the slave range.

Now you have

master : 8bit address , 0x00 to 0x0f

slave : 9bit address , 0x00 to 0x1f

This way the master can't access the whole slave memory and sopc returns the error.

You must increase master range at least one bit. You definitely can do it, since in the original post it was even 0 to 0xffff and I don't know either WHY nor HOW you reduced it.

I believe you have some option for this in the component options.