Supermicro SUPERSERVER 6011H User Manual page 109

B-4 Bus Checkpoint Codes
The system BIOS passes control to different buses at the following check-
points:
Checkpoint
2Ah
38h
39h
95h
Additional Bus Checkpoints
While control is inside the different bus routines, additional checkpoints are
output to I/O port address 0080h as word to identify the routines being
executed. These are word checkpoints.
The low byte of checkpoint is the system BIOS checkpoint where control is
passed to the different bus routines.
The high byte of checkpoint indicates that the routine is being executed in
different buses.
High Byte
The high byte of these checkpoints includes the following information:
Bits 7-4
0000 Function 0.
0001 Function 1.
0010 Function 2.
0011 Function 3.
0100 Function 4.
0101 Function 5.
0110 Function 6.
0111 Function 7.
Appendix B: AMIBIOS POST Diagnostic Error Codes
Code Description
Initializing the different bus system, static, and output
devices, if present.
Initialized bus input, IPL, and general devices, if
present.
Displaying bus initialization error messages, if any.
Initializing bus adaptor ROMs from C8000h through
D8000h.
Description
Disable all devices on the bus
Initialize static devices on the bus
Initialize output devices on the bus
Initialize input devices on the bus
Initialize IPL devices on the bus
Initiate general devices on the bus
Initialize error reporting on the bus
Initialize add-on ROMs for all buses
B-9