Abstract: A method and system for testing a microprocessor. The method includes executing debug application software on an external device, downloading diagnostic program instructions from the external device to a cache memory within the microprocessor via a serial test interface. Once the diagnostic program instructions are loaded into the cache memory, the method includes executing the diagnostic program instructions from within the cache memory.

Abstract: A remote flash ROM and security package is formed and delivered to a system ROM of a target computer system for remote flashing of the ROM and remote configuration of security settings for the computer system. The remote flash ROM and security package includes flash ROM and security control code for calling a remote flash and security driver to execute a remote flash or to remotely configure a security setting, a file containing a “signed” ROM image to be flashed to the ROM, a security settings file which preferably is encrypted, and a remote flash and security control container for containing the flash ROM and security code, the ROM image, and the security settings file. The remote flash and security driver may be included in the remote flash ROM and security package or may be resident to the target computer system. In the preferred embodiment, the computer system includes a secure memory device containing an administrator password for locking and unlocking the ROM.