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EP0443876A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Computer system capable of connecting expansion unit

Assignee: Toshiba Corp
•
Filing: 1991-02-22
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Granted: —
•
Expires: 2011-02-22
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Abstract

Abstract A personal computer system capable of connecting to an expansion unit is designed to eliminate the need for a user to set the I/O address and interrupt level of an I/O controller to be connected to the expansion unit, thereby reducing the number of tasks to be carried out by the user. Accordingly the BIOS includes a program which checks the mount status of the expansion unit to the system when power is on, and disables an I/O controller incorporated in the computer main frame and sets the I/O controller connected to the expansion unit to the desired configuration upon judging that the expansion unit is mounted. Even when the expansion unit is connected after power is cut off in resume mode, therefore, the expansion unit can be used without forcing the user to set the mode back to a boot mode.

Inventors

  • 👤 Makoto C/O Intellectual Property Division Arai
  • 👤 Emiko C/O Intellectual Property Division Iizuka

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-26 06:48
CPC Classifications
G; G06; G06F; G06F3/00; G06F9/00; G06F9/06; G06F9/44; G06F9/4401; G06F9/4411; G06F12/00; G06F12/02; G06F12/06; G06F12/0646; G06F12/0684; G06F15/00; G06F15/16; G06F15/177

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 86 words
A computer system comprising: a computer main frame having a plurality of main elements; an expansion unit having a plurality of expansion elements; interface means for connecting said expansion unit to said computer main frame; and system configuration control means, incorporated in each of said computer main frame and said expansion unit, for setting at least address data of input/output devices to be respectively installed in said computer main frame and said expansion unit, thereby permitting said input/output devices to be used by said computer system.
Claim 2
Dependent Claim 105 words
A computer system according to claim 1, wherein said system configuration control means includes: power-backup memory means for storing setup data; and program executing means for checking a mount status of said expansion unit to said computer system when power is on, acquiring said setup data from said memory means and setting said computer system to a desired configuration when said expansion unit is not mounted, and disabling an input/output configuration controller of said computer main frame, acquiring said setup data from said memory means, then setting an input/output configuration controller of said expansion unit to a desired configuration when said expansion unit is mounted.

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