Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

am I a complete noob?!

after a lot of time, I managed to load a simple c program into the nios2 now the problem is that when I use the NIOS IDE to load it, it just hangs(the board), and when I use the monitor program, f...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

How are you bypassing the d$, assuming you have some? The keyword volatile will not bypass the d$. You either have to use the IORD/IOWR macros or bypass the d$ by ORing your address value with bit 31 set high.

How do you know it's hanging? Have you tried debugging it in the IDE?

UPDATE: The "e" core has no d$, so you weren't (and aren't) bypassing the $, which is what you have to do when accessing hw registers.

Best of luck!

- Ura