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Code
Description
AC
Reserved for ASL (see ASL Status Codes section below)
AD
Ready To Boot event
AE
Legacy Boot event
Exit Boot Services event
AF
Runtime Set Virtual Address MAP Begin
B0
B1
Runtime Set Virtual Address MAP End
B2
Legacy Option ROM Initialization
B3
System Reset
B4
USB hot plug
B5
PCI bus hot plug
Clean-up of NVRAM
B6
Configuration Reset (reset of NVRAM settings)
B7
B8– BF
Reserved for future AMI codes
D0
CPU initialization error
D1
System Agent initialization error
D2
PCH initialization error
Some of the Architectural Protocols are not available
D3
PCI resource allocation error. Out of Resources
D4
No Space for Legacy Option ROM
D5
D6
No Console Output Devices are found
D7
No Console Input Devices are found
D8
Invalid password
D9
Error loading Boot Option (LoadImage returned error)
Boot Option is failed (StartImage returned error)
DA
Flash update is failed
DB
DC
Reset protocol is not available
ACPI/ASL Checkpoints (under OS)
Code
Description
03
System is entering S3 sleep state
System is entering S4 sleep state
04
05
System is entering S5 sleep state
30
System is waking up from the S3 sleep state
System is waking up from the S4 sleep state
40
AC
System has transitioned into ACPI mode. Interrupt controller is in PIC mode.
AA
System has transitioned into ACPI mode. Interrupt controller is in APIC mode.
KNPA-U16
A-5
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