Article ID: 250534
Article Last Modified on 1/27/2007
APPLIES TO
- Microsoft Windows Millennium Edition
- Microsoft Windows 98 Standard Edition
- Microsoft Windows 98 Second Edition
- Microsoft Windows 95
This article was previously published under Q250534
SUMMARY
This article describes the Plug and Play subkey and the components of the following registry key in a Windows Me/98/95-based computer:
HKEY_LOCAL_MACHINE\Enum\Bios
MORE INFORMATION
The following subkey contains entries for Plug and Play components of the Basic Input/Output System (BIOS), including timers, controllers, DMA chips, and so on:
HKEY_LOCAL_MACHINE\Enum\Bios
The following list includes a value name, followed by an appropriate description:
PNP0000-PNP0004 Interrupt controllers
PNP0100-PNP0102 System timers
PNP0200-PNP0202 DMA controllers
PNP0300-PNP0313 Keyboard controllers
PNP0400-PNP0401 Printer ports
PNP0500-PNP0501 Communication ports
PNP0600-PNP0602 Hard disk controllers
PNP0700 Standard floppy disk controller
PNP0800 System speaker
PNP0900-PNP0915 Display adapters
PNP0930-PNP0931
PNP0940-PNP0941
PNP0A00-PNP0A04 Expansion buses
PNP0B00 CMOS real-time clock
PNP0C01 System board extension for Plug and Play BIOS
PNP0C02 Reserved
PNP0C04 Numeric data processor
PNP0E00-PNP0E02 PCMCIA controllers
PNP0F01 Serial Microsoft mouse
PNP0F00-PNP0F13 Mouse ports
PNP8xxx Network adapters
PNPA030 Mitsumi CD-ROM controller
PNPB0xx Miscellaneous adapters
Plug and Play codes are grouped in classes according to their four-digit code. You can view and modify the device configuration used on your computer with Device Manager.
Detection and enumeration are the two processes that Windows uses to configure devices. Detection is the process Windows uses during its search for legacy or non-Plug and Play devices on a computer. Detection is used during Windows Setup and any time you use the Add New Hardware Wizard to search for new hardware installed in your computer. Detection does not run each time you start Windows. During the detection process, Windows creates a log file named Detlog.txt in the root folder of the boot drive. This file is commonly referenced when troubleshooting problems with hardware detection.
Enumeration is the process Windows uses to identify Plug and Play devices in your computer, including those devices on Plug and Play buses, such as ISAPNP, PCI, and PC Card (PCMCIA) devices. Enumeration occurs each time Windows starts and whenever Windows receives notification that a change has occurred in the computer hardware configuration, such as when you remove a PC Card.
Additional query words: scanregw scanreg
Keywords: kbenv kbinfo KB250534
