Identification of a swappable device in a portable computer

Details Identification of a swappable device in a portable computer Identification of a swappable device in a portable computer

1997-10-27

2000-03-28

Shin, Christopher B.

Electrical computers and digital data processing systems: input/

Intrasystem connection

Bus access regulation

710 10, 710 19, 710104, G06F 1300

Patent

active

060444231

ABSTRACT:
An identification system for use in a portable computer incorporating optional swappable devices through one swap bay is disclosed. The identification system includes an ID provider provided at each of the swappable device for providing specific device information with the portable computer through an I/O port. The device information includes for example an identification number representing the kind of the peripheral device, a CD-ROM speed data, a storage capacity data, and a manufacturer data. This information is stored in a memory such as an EEPROM and the data is transferred serially to the computer system in response to a command generated in the computer. The identification system further includes a ROM BIOS for reading out the device information from the swappable device to perform initialization therefor based on the device information when the computer is started or a swap check request signal is invoked during operation of the computer. With this, the identification system provides for the detailed and precise device information whenever the computer system is booted or the swappable device has changed during the operation of the computer. Thus, preventing time loss for individual checking for all swappable devices during the booting is possible. Further, misconceptions of the module in the portable computer can be effectively prevented.

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Plug and Play ISA Specification, Version 1.0a, May 5, 1994.

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