How do I use a password to enable a new device in the Quartus II software? - How do I use a password to enable a new device in the Quartus II software? Description You may need a password to enable full programming support for some APEX ™ devices in the Quartus II software. Below are the steps to add the password: Close all versions of the Quartus II software. Open the < Quartus II directory > \bin\quartus.ini file. This file may have to be created if it does not already exist. For the Quartus II software version 1.1 and lower, enter the following in a new line: Password = {password_a} For the Quartus II software version 2.0 and higher, enter the following in a new line: dev_password = {password_a} password_a is the password for the APEX device. If you have more than one password, separate them using commas (e.g., {password_a, password_b} . Contact Altera ® Applications for available device passwords. Custom Fields values: ['novalue'] Troubleshooting novalue False ['novalue'] ['novalue'] novalue novalue ['Programmable Logic Devices'] ['novalue'] ['novalue'] ['novalue']