Abstract: A self-modifying FPGA system includes an FPGA and a configuration memory coupled to the FPGA for providing the FPGA with configuration data including SAFE configuration data and dormant configuration data. The SAFE configuration data is initially loaded to the FPGA and the FPGA is configured to a safe operating mode. Upon a determination to proceed to a next step of self modification, dormant configuration data contained in the configuration memory is loaded into the FPGA and the FPGA is configured to a secure operating mode.

Abstract: A self-modifying FPGA system includes an FPGA and a configuration memory device coupled to the FPGA for providing the FPGA with configuration information. The configuration memory device is programmed with configuration data and dormant data. The FPGA system is also provided with a configuration assist circuit coupled to the FPGA and the configuration memory device for controlling loading of configuration information from the configuration memory device to the FPGA. A tamper detection system provides a tamper signal to the FPGA, wherein when a tamper signal is received by the FPGA the configuration data is replaced with the dormant data.