| 摘要 |
The entertainment apparatus comprises a main bus and a subbus, which are connected to each other via a center bus having a queue. A CPU, a memory, an image processor and a DMAC are connected to the main bus. A disk drive, an I/O processor, a sound processor, and a security module are connected to the subbus. A program code, which is compressed and partially encrypted, is recorded on a secondary recording medium. The I/O processor obtains a decryption key from the security module. The I/O processor decrypts digital information read from the secondary recording medium based on the decryption key and decompresses the digital information. The decompressed digital information is written into the memory via the queue using a DMA transfer.
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