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HI,
Okay, problem solved?
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I do not know yet. The chip never starts.
conf_done = 0.7v = pulled low
nStatus = 0.7..1.3v =pulled low and then high
These signals, according to the documentation, mean configuration error (from epcq256 by active serial).
At the same time, the programmed user LEDs light up and go out at once (they should glow constantly). This means that the FPGA is still being configured.
I read that this is the error of the crc sum, but I have not yet figured out how to solve it.
I also worry that when I program in quartus my epcq256 , the first 26% of the process takes a long time (about 3-4 minutes), and then the process goes to 100% very quickly (in 1 second). At the same time he writes that everything went well.
On another my chip (cyclone IV) the process is smoothly slow all 100%. Maybe this is where the problem lies.
Honored Contributor
