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Altera_Forum's avatar
Altera_Forum
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17 years ago

Nios CPU read FIFO

Hi, all I'm trying to use Nios CPU to read data from a FIFO via Avalon interface. However, when I read data through a pointer which points to the FIFO base address, the data are constant and th...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

You do not provide enough information about your nios design.

do you have data cache ?

let assume your fifo base adr is 0x01000000 then you can try data cache bypass when you set adr bit 31 to 1 and read from adr 0x81000000