Input/Output Interface and device abstraction

Details Input/Output Interface and device abstraction Input/Output Interface and device abstraction

2005-11-22

2005-11-22

Huynh, Kim (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral adapting

C710S062000, C710S105000, C709S230000, C463S042000

Reexamination Certificate

active

06968405

ABSTRACT:
An electronic Input/Output Interface and device abstraction system used in gaming machine includes: a game central processing unit (the game “CPU”); an intelligent input/output controller board (the “IOCB”); an Industry Standard Architecture PC bus “ISA” bus); and a framed message transport protocol. The IOCB facilitates the communications between the game CPU and virtual device services, which are peripheral devices associated with the gaming system. These include devices such as displays, buttons, hoppers, coin mechanisms and bill validators. The framed message transport protocol includes: a message header, a body containing a virtual device message, and a packet validation signature. The game CPU communicates to gaming peripherals by sending virtual device messages across the ISA bus to the IOCB. The IOCB then routes the virtual device message to the appropriate virtual device services. The virtual device services are responsible for handling specific hardware, and are made up of virtual device drivers on the game CPU that communicate with virtual devices on the IOCB and use of the IOCB and the high speed interface enables the game CPU to use more of its available functions for controlling gaming functions rather than one operation of its associated peripheral devices.

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