NIOSII addressing for 32 bit wide SDRAM

May seem like a silly question but I ask because when using inc of 8 and writing

data=addr to the given addr then values are all unique and read value = written value.

But with 8 then the memory span seems incorrect and I can't go beyond 0x10000000

else read all F's. It also does not seem logical to use 8 as I believe we are using byte

addressing and a 32DIRECT access would hit 4 of these byte addresses at a time.

However, when using 4x addressing there is 2x duplication between subsequent

addresses when reading back.

There could be timing issues relating to this but I wanted to make sure that I am

at least doing the right thing in the NIOS code first.

Thank-you.