Browse Prior Art Database

A Way to Ensure Plug&Play Function for the External Floppy-Disk-Drive

IP.com Disclosure Number: IPCOM000014185D
Original Publication Date: 2000-Jul-01
Included in the Prior Art Database: 2003-Jun-19
Document File: 1 page(s) / 29K

Publishing Venue

IBM

Abstract

Disclosed is a method of ensuring the Plug&Play function for the external floppy disk drive (FDD) by using a conventional parallel port or by using the docking station under the specific operating system, such as Windows98 and Windows2000. This solution utilizes the runtime-event in order for the operating system to recognize the external FDD dynamically. This runtime-event is issued from the system management controller when the external FDD is attached to the system. The hardware-specific signal from the FDD is the trigger for the system management controller to issue the runtime-event. This scenario has been implemented in the ThinkPad T20 series. The following is the outline of the schematics to recognize the external FDD in case of ThinkPad T20. |Parallel |ThinkPad FDD |Port +5V level

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A Way to Ensure Plug&Play Function for the External Floppy-Disk-Drive

Disclosed is a method of ensuring the Plug&Play function for the external
floppy disk drive (FDD) by using a conventional parallel port or by using the
docking station under the specific operating system, such as Windows98 and
Windows2000.

This solution utilizes the runtime-event in order for the operating system to
recognize the external FDD dynamically. This runtime-event is issued from the
system management controller when the external FDD is attached to the system.
The hardware-specific signal from the FDD is the trigger for the system
management controller to issue the runtime-event.

This scenario has been implemented in the ThinkPad T20 series. The following
is the outline of the schematics to recognize the external FDD in case of
ThinkPad T20.

+-----------------------------------------+

               |Parallel |ThinkPad
FDD |Port |
+------+----+ +--+ +5V level |
|| | | | | |

| | +--| |<-|------R-----+ |
| | | | | | +-----------------+ |
| | +->| |--|-I----D-----+------>|System management| |
| | | | | | |controller | |
+------+----+ +--+ | +-----------------+ |

                    | | |
Docking | | |
Station | | |
+--------+ | | |
| +5V | |Docking | |
FDD +----+ | | |Connector | |
+---------+ | | +-+ +--+ | |
| |||||| | | |
| +------| |-+-|>| |--|------D-----+ |
| | || ||| | |
| G || ||| | |
| || ||| | |
+---------+ | +-+ +--+ |

+----+ | | |
|| | |
+--------+ +-----------------------------------------+

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