Expansion device and computer system to which expansion device c

Details Expansion device and computer system to which expansion device c Expansion device and computer system to which expansion device c

1996-09-20

1999-12-28

Sheikh, Ayaz R.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710131, 710102, 710 16, 710 36, G06F 1300

Patent

active

060094923

ABSTRACT:
A PC card adapter and an I/O adapter as expansion devices respectively have discrimination circuits for outputting discrimination signals. A computer body has an expansion connector commonly used for the PC card adapter and the I/O card adapter, and an I/O controller. A selected one of the PC card adapter and the I/O adapter is connected to the expansion connector. The I/O controller has an input/output section commonly used for the PC card adapter and the I/O adapter and corresponding to the expansion connector, and a bus switching circuit for switching bus signal lines for input/output processing of interface signals input/output through the input/output section. With this arrangement, in a computer system using a plurality of types of expansion devices such as a PC card slot, a printer port, and a serial communication port, the number of input/output pins and the number of connectors of each controller for interfacing between a corresponding expansion device and the computer body can be decreased, thereby realizing reductions in the size and cost of the system.

REFERENCES:
patent: 5090830 (1992-02-01), Kroeger et al.
patent: 5237663 (1993-08-01), Srinivasan
patent: 5287460 (1994-02-01), Olsen et al.
patent: 5331509 (1994-07-01), Kikinis
patent: 5428730 (1995-06-01), Baker et al.
patent: 5497490 (1996-03-01), Harada et al.
patent: 5545057 (1996-08-01), Tan et al.
patent: 5548782 (1996-08-01), Michael et al.
patent: 5553245 (1996-09-01), Su et al.
patent: 5564055 (1996-10-01), Asnaashari et al.
patent: 5604870 (1997-02-01), Moss et al.
patent: 5615344 (1997-03-01), Corder
patent: 5659800 (1997-08-01), Zhang et al.
patent: 5664118 (1997-09-01), Nishigaki et al.
patent: 5687387 (1997-11-01), Endejan et al.
patent: 5734840 (1998-03-01), Chew et al.
patent: 5805833 (1998-09-01), Verdum

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