Honored Contributor
Honored ContributorHello. I seem to have a similar problem to that discussed in this thread, but with Cyclone II so the same solution does not apply (i.e. the pins are automatically assigned unlike in Cyclone III).
Here's the message I get when I try to download a file to the flash: Using cable "USB-Blaster [USB-0]", device 1, instance 0x01 Resetting and pausing target processor: OK No EPCS layout data - looking for section [EPCS-FF] Unable to use EPCS device Leaving target processor paused I'm using Cyclone II EP2C35 FPGA and EPCS64N config chip; Quartus II V6.0, NIOS II V6.0, and attempting to program directly through the command shell (I can't get a multiprocessor system to program via the Flash Programmer IDE). The strange thing is that I already had the unit programmed and integrated into my system and it suddenly started to fail. Because it is fully integrated, I only have access to JTAG pins, but this should be adequate for debugging and reprogramming. Unfortunately, NIOS times out when I try to debug (unless I use a different project with no use of external SDRAM...not sure if this is a related problem or not at this point). And then when I try to program (whether I use the SDRAM or not), I get the communication error mentioned above. I've seen a few related topics with solutions for Cyclone III (assigning pins) and NIOS II V5.1 or less (incompatibility w/ lead-free EPCS devices), but those are not quite the same as the hardware and tools that I am using. Can someone please help me determine what could be the cause of this problem, and how I can go about trying to resolve it? Thanks!
