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Intel Desktop Board DG33BU Technical Product Specification
70
Table 37. Port 80h POST Codes (continued)
POST Code Description of POST Operation
Keyboard (PS/2 or USB)
90 Resetting keyboard
91 Disabling keyboard
92 Detecting presence of keyboard
93 Enabling the keyboard
94 Clearing keyboard input buffer
95 Instructing keyboard controller to run Self Test (PS/2 only)
Mouse (PS/2 or USB)
98 Resetting mouse
99 Disabling mouse
9A Detecting presence of mouse
9B Enabling mouse
Fixed Media
B0 Resetting fixed media
B1 Disabling fixed media
B2 Detecting presence of a fixed media (IDE hard drive detection etc.)
B3 Enabling/configuring a fixed media
Removable Media
B8 Resetting removable media
B9 Disabling removable media
BA Detecting presence of a removable media (IDE, CD-ROM detection, etc.)
BC Enabling/configuring a removable media
BDS
Dy Trying boot selection y (y=0 to 15)
PEI Core
E0 Started dispatching PEIMs (emitted on first report of EFI_SW_PC_INIT_BEGIN
EFI_SW_PEI_PC_HANDOFF_TO_NEXT)
E2 Permanent memory found
E1, E3 Reserved for PEI/PEIMs
DXE Core
E4 Entered DXE phase
E5 Started dispatching drivers
E6 Started connecting drivers
continued