Abstract: An entertainment apparatus comprising a peripheral device and a controller for controlling the peripheral device. The peripheral device and the controller are connected each other by an address bus and a data bus. The peripheral device which receives a DMA acknowledge signal from the controller carries out 32-bit DMA transfer using lower 16 bits of the address bus and the data bus, during assertion of the DMA acknowledge signal.

Abstract: In a game system such as a television game system, a television game machine main unit includes a protocol controller and each game operation device connected to the television game machine unit via a serial port also has a protocol controller. The television game machine main unit when connected to a game operation device which has a unique identifier, combines a communication protocol that transmits and receives data for each character with a communication protocol which transmits or receives data for two or more characters in a row and switches the communication protocol which corresponds to that game operation device based on the identifier thereof to minimize the amount of information required between the television game machine main unit and the game operation device.

Abstract: An entertainment apparatus comprising a peripheral device and a controller for controlling the peripheral device. The peripheral device and the controller are connected each other by an address bus and a data bus. The peripheral device which receives a DMA acknowledge signal from the controller carries out 32-bit DMA transfer using lower 16 bits of the address bus and the data bus, during assertion of the DMA acknowledge signal.

Abstract: The pin definition of a PC card having a plurality of specification modes is changed stepwise in a state that it is mounted in a PC card slot. This realizes mode switching in an active state while preventing the pin functions of the PC card 10 and the PC card slot 20 from conflicting with each other. A standardized mode is employed when the PC card 10 is in the initial state. Information to the effect that the PC card is mode-switchable is written to a special area of the PC card 10 in advance. This makes it possible to use the PC card for general purposes.

Abstract: A combination video tape recorder and camera includes a main body having a video tape recorder and a television camera, and a separable hand grip secureable to a side wall of the main body. The hand grip carries a view finder for the camera and a battery for supplying operational power to the video tape recorder and the television camera.

Abstract: A combination video tape recorder and camera includes a main body having a video tape recorder and a television camera, and a separable hand grip secureable to a side wall of the main body. The hand grip carries a view finder for the camera and a battery for supplying operational power to the video tape recorder and the television camera.