ENTERTAINMENT DEVICE, DATA PROCESSING DEVICE AND PORTABLE STORAGE DEVICE.

摘要

An entertainment device includes a detachable portable memory capable of communicating with a data processor without using any special mechanical components or increasing processing load on the entertainment device. When a file management system (141) is loaded into a main storage device (232), a register (121) is set at a specific value. Before accessing a flash ROM (140) based on the loaded content, a CPU (231) determines whether the content of the register (121) agrees with a specific value. If they agree, the flash ROM (140) is accessed; if not, the file management system (141) is loaded again.