Editing Advanced Power Management (section)

== Power management events ==
There are 12 power events (such as standby, suspend and resume requests, and low battery notifications), plus [[Original equipment manufacturer|OEM]]-defined events, that can be sent from the APM BIOS to the operating system. The APM driver regularly [[Polling (computer science)|polls]] for event change notifications.

Power Management Events:<ref name="APM_spec_V12">{{cite web|title=Advanced Power Management (APM) BIOS Interface Specification Revision 1.2 February 1996 Intel/Microsoft|url=http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/APMV12.rtf|access-date=27 December 2006|archive-url=https://web.archive.org/web/20120206030045/http://download.microsoft.com/download/1/6/1/161ba512-40e2-4cc9-843a-923143f3456c/APMV12.rtf|archive-date=6 February 2012|url-status=dead}} 090429</ref>
{| class="wikitable"
|- 
! Name !! Code !! Comment
|-
| System Standby Request Notification  || 0x0001 ||
|-
| System Suspend Request Notification  || 0x0002 ||
|-
| Normal Resume System Notification  || 0x0003 ||
|-
| Critical Resume System Notification  || 0x0004 ||
|-
| Battery Low Notification  || 0x0005 ||
|-
| Power Status Change Notification  || 0x0006 ||
|-
| Update Time Notification  || 0x0007 ||
|-
| Critical System Suspend Notification  || 0x0008 ||
|-
| User System Standby Request Notification  || 0x0009 ||
|-
| User System Suspend Request Notification  || 0x000A ||
|-
| System Standby Resume Notification  || 0x000B ||
|-
| Capabilities Change Notification  || 0x000C || Due to setup or device insertion/removal
|}