Apparatus and method for detecting the presence of a floppy...

Details Apparatus and method for detecting the presence of a floppy... Apparatus and method for detecting the presence of a floppy...

2007-12-25

2007-12-25

Trujillo, James K. (Department: 2116)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

C713S002000, C713S100000, C710S300000, C710S301000, C710S302000

Reexamination Certificate

active

10836915

ABSTRACT:
One of the ground pins on a conventional floppy drive host connector is coupled to an input of a computer system and to a supply potential via a pull-up resistor. When a floppy drive is connected to the floppy drive host connector, the pin is pulled to ground by virtue of the ground connections within the floppy drive device. When a floppy drive is not connected to the floppy drive host connector, the pin remains at the supply potential. BIOS firmware or another system within the computer may detect the presence of the floppy drive by simply reading the value of the input.

REFERENCES:
patent: 5636347 (1997-06-01), Muchnick et al.
patent: 5884102 (1999-03-01), England et al.
patent: 5944541 (1999-08-01), Payne
patent: 6705524 (2004-03-01), Chow et al.

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