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Altera_Forum
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17 years ago

CycloneII-JTAG Mode

Hi, I'm using CycloneII(EP2C8Q208). my problem is can't configure jtag mode. so i checked pin number. but i couldn't found error. and i checked power supply but that's working. i using usb_b...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

The most easy way to see, if the Quartus programmer is actually accessing the USB Blaster is to watch the blue LED.

If USB Blaster is accessed, but can't scan the device chain, there's most likely a hardware issue with the board. The Quartus Programmer has debugging functions to trace the JTAG signals in this case.