Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Can't select USB-Blaster in SignalTap

Hey there, i'm using Quartus II 64bit 12.1 to program a Cyclone IV. Everything works fine, except sometimes i can't use SignalTap. I've already googled some time and used the forum search. Now ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

Do you have multiple USB blasters connected to your computer? Or are you saying that some other FTDI device is mistaken as your USB blaster? Sometimes the USB blaster will changed port number if re-plugged. What does jtagconfig report?