niosII常见错误及解答

Windows Security Alert - To help protect your computer, Windows Firewall has blocked some features of this program.

Do you want to keep blocking this program (on some computers: Your network administrator can unblock this program for you.)

Name: nios2-iss (or: nios2-gdb-server) Publisher: unknown

Windows Firewall has blocked this program from accepting connections from the Internet or a network. If you recognize the program or trust the publisher, you can unblock it.

Message seen in: a message-box, shown when you debug the program. If you use the Nios II Instruction Set Simulator, you would see the program name nios2-iss; if you use the DE2 board, you would see nios2-gdb-server.

Discussion and suggested solution: This message does not indicate a problem, and will not affect your debugging session. If the dialog box says \network administrator can unblock this program for you, check the box \this program, don't show this message again\and then click \to continue. If the dialog box says \you want to keep blocking this program\click \

More information: Network-related system-calls are used for communication between the debugger and the Nios II Instruction-Set Simulator. Windows Firewall has correctly identified that these system-calls open a possibility for a remote system to connect to the debugger. To the best of our knowledge, this is not a security risk - even if you choose to unblock the program. Should you wish to review or modify your firewall settings for blocking nios2-iss and/or nios2-gdb-server, click Windows' Start button, select Settings (if present), then Control Panel, then Security Center (if present), then Windows Firewall. Open the Exceptions tab and examine the check boxes (if any) for nios2-gdb-server and nios2-iss. Uncheck the check-boxes to block the programs, or check the boxes to unblock the programs.

You have more than one JTAG cable available so you must use the --cable option to choose between them (or open the \or \dialog and go to the \Connection\tab). No --cable option was provided (or you selected Automatic)

Message seen in: the console window of the Nios II IDE, when you try to run your project on the Nios II Hardware.

Discussion and suggested solution: The most likely cause is that you have a ByteBlaster driver installed, in addition to the U

SB-Blaster. To fix this, select Tools - Quartus II Programmer, to open the Quartus Programmer. In the Programmer window, click \Setup...\You will now see a list of installed drivers, under the heading \hardware items\In a correct list, only the USB-Blaster is available. If one or more other items are listed (such as ByteBlaster), select an unwanted item and click \Hardware\Repeat this until only the USB-Blaster remains. Now make sure that the USB-Blaster is the \selected hardware\then click Close. See our tutorial for details.