EPCS controller booting trouble

Hi Arjan,

Assuming you're doing everything the same WRT to programming the epcs device and using on-chip v. sdram, I would still be suspicious of the sdram controller/device itself.

Is there any chance your memory tests are missing failures. E.g. -- are you using a

data cache, but forgetting to flush/invalidate before doing the read back?

> Is the bootloader that comes with the NIOS kit smart enough to know where to

> copy the NIOS code?

Yes -- basically for each elf (output) section there's an address-length-data record

that gets programmed into the epcs. The address/length is the VMA/size from the

corresponding section in your elf file.

It would be a good idea to check your elf file (via objdump) to make sure your

sections are where they need to be and review jdhar's document.

Regards,

--Scott