HI, I have meet a cyclone III configuration problem in this days, my development board is done by myself and using an epcs64 configuration chip and altera's EP3C40F484C8 chip, when I want jic files downloaded through the JTAG port to the epcs64 ,at the time of download progress bar reaches 85% , then failed. Information Tip "can't recognize silicon ID, operation failed"; I do not know what reason, I used the schematic configuration of the altera company's official documents (configuration handlebook) of "combining JTAG and AS configuration Schemes"; when I use AS download mode, the pof file can be downloadable, but it can not be read out;
why?
Is the epcs64 far away from the cyclone III when wiring?
