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142 Chapter 4
POST Codes Tables
These tables describe the POST codes, drivers, and keys for the POST.
Port 80 POST Codes
The following table details the Port 80 POST codes and drivers used in the POST.
Driver Name
Port 80
Code
Driver Name
Port 80
Code
PeiEventLog 01 CpuIo 3E
OemServices 02 Cf9Reset 3F
SioInit 03 PcRtc 40
MonoStatusCode 04 StatusCode 41
PentiumMCpuPeim 08 Variable 42
PlatformStage1 09 SmmVariable CF
Variable 0A EmuVariable 43
IchInit 0B TcgDxe A2
PlatformStage2 0D PhysicalPresence A3
IchSmbusArpDisabled 0E TpmDriver AE
ClockGen 12 TcgSmm AE
OpPresence 13 PhysicalPresenceReadyToBoot AE
TcgPei 14 DataHubRecordPolicy AD
FindFv 15 Undi 86
DxeIpl 2F SNP 90
LightMemoryInit 10 BC 91
S3ResumeSoftSmi 11 PxeDhcp4 92
Crc32SectionExtract 31 Ebc 93
OemServices A4 IsaBus 4D
EventLog A5 IsaSerial 4E
ScriptSave 32 Ps2Mouse 6D
AcpiS3Save 33 IdeBus 4F
SmartTimer 34 LightPciBus 50
JpegDecoder 35 UsbBot 6E
PcxDecoder 36 UsbCbi0 6F
PlatformBds 8A UsbCbi1 70
MpCpu 37 UsbKb 71
LegacyMetronome 38 UsbMassStorage 72
FtwLite 39 UsbMouse 74
Runtime 3A Ehci 8F
MonotonicCounter 3B Uhci 73
WatchDogTimer 3C UsbBus 75
SecurityStub 3D SmmBase C2