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Altera_Forum
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18 years ago

Error: Can't access JTAG chain Error: Operation failed

Dear all, i have a custom board, with stratix II, and Cyclone II, till today i dont have any problem in downloading code, and debug with JTAG port, but today i got "Error: Can't acces...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

I also have the problem, my chip is EP2C8Q208, I use byteblasterII to download the program, when I use the AS mode, it can work. but when I choose the JTAG mode, it doesn't work now, several days ago it can work. I checked the circuit around the JTAG, there are no problems with the soldering. Is there anybody solve this problem? Thank you.