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Altera_Forum
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12 years ago

Signal Tap II - Invalid JTAG Configuration (using USB Blaster) (Cyclone IV)

Hi, I'm trying to use SignalTap in the Quartus II IDE and after setting up USB Blaster according to some online tutorial, (it seems to be working in the sense that the "Hardware Setup" tab identifies...
Altera_Forum's avatar
Altera_Forum
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12 years ago

Thanks for the suggestions. I have temporarily switched to using the USB Blaster (instead of the BlasterII) and that seems to resolve the issue. That leads me to believe that I do have a 10 MHz vs. 24 MHz timing constraint error as you pointed out. I don't yet have access to 13.0, but I will try with your recommended constraints and report back if it works better.

Thanks for the help.