Controlling method and apparatus for supporting hard disk and/or CD-ROM drives through the PCMCIA interface

摘要

An apparatus for controlling to support hard disk and/or CD-ROM drives through the PCMCIA interface of a notebook computer system. The apparatus comprises a PCMCIA controller connected to the ISA bus of said computer system for implementing PCMCIA interface functions, and an ATA controller also connected to the ISA bus for implementing ATA interface functions. The apparatus further comprises a multiplexer circuit connected both to the PCMCIA controller and the ATA controller for the apparatus to perform either the PCMCIA or the ATA interface functions under control of a selection signal.