Forum Discussion

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

SOF2FLASH and EPCS16

Hi All,

I've just started upgrading to Q4.2 (with sp1 added) and NIOS1.1 during a project lull

and I'm having a few problems getting my bootloader running (which was previously fine

under the older Q4.1 and Nios 1.0).

Firstly I've noticed during sof download and after pressing the power reset on the cyclone 1C20

board that the FPGA Config Error (red led) lights briefly, something it never used to do before

however the design appears to function correctly and I can download an application which

runs fine on the programmed board.

Secondly, I've added a few lines to a make file that perform the steps necessary to create

the new EPCS download image files coupled with the bootloader files.

during the sof2flash stage of converting the target sof to a flash download file it reports

that the epcs device is:

--device=EPCS16

However the board contains the standard Altera EPCS4 device. Is this normal behaviour?

Regards,

....

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    21 years ago

    Hi,

    With regards to sof2flash: Yes, this is normal behavior. We are passing in the largest EPCS device available.... at that stage in the conversion process it does not matter which specific EPCS device is targeted; the utility is just converting quartus programming file formats around to something it can use to create a .flash (i-hex) file later in the process that will be programmed to the EPCS chip of your choice.