Personal computer with riser card PCI and Micro Channel interface

摘要

A computer having a riser card with a riser card interface that connects to an industry standard system board and has slots for expansion cards is provided with support circuitry that enables the computer system to perform personalized functions not provided for by the industry standard system board, including security functions. The placing of the support circuitry on the riser card allows the use of an industry standard system board and the personalization of the system to perform different IBM PS/2 functions depending on the installed riser card, in conjunction with Micro Channel and PCI bus architecture.