When using the serial, parallel, or XChecker cables, you must set up the configuration mode of the devices being configured as slave serial. You must set M0, M1, and M2 to VCC. If you intend to use them as user I/Os, use 4.7 kilohm pull-ups. Refer to the Development System User Guide or The Programmable Logic Data Book for information on how to set the mode pins.
