Appendix C: LED Decoder
166 Intel
®
Server Board S2600CP Intel
®
Server System P4000CP Family Service Guide
Checkpoint
Diagnostic LED Decoder
Description
1 = LED On, 0 = LED Off
Upper Nibble Lower Nibble
MSB LSB
8h 4h 2h 1h 8h 4h 2h 1h
LED # #7 #6 #5 #4 #3 #2 #1 #0
9Bh 1 0 0 1 1 0 1 1 DXE USB reset
9Ch 1 0 0 1 1 1 0 0 DXE USB detect
9Dh 1 0 0 1 1 1 0 1 DXE USB enable
A1h 1 0 1 0 0 0 0 1 DXE IDE begin
A2h 1 0 1 0 0 0 1 0 DXE IDE reset
A3h 1 0 1 0 0 0 1 1 DXE IDE detect
A4h 1 0 1 0 0 1 0 0 DXE IDE enable
A5h 1 0 1 0 0 1 0 1 DXE SCSI begin
A6h 1 0 1 0 0 1 1 0 DXE SCSI reset
A7h 1 0 1 0 0 1 1 1 DXE SCSI detect
A8h 1 0 1 0 1 0 0 0 DXE SCSI enable
A9h 1 0 1 0 1 0 0 1 DXE verifying SETUP password
ABh 1 0 1 0 1 0 1 1 DXE SETUP start
ACh 1 0 1 0 1 1 0 0 DXE SETUP input wait
ADh 1 0 1 0 1 1 0 1 DXE Ready to Boot
AEh 1 0 1 0 1 1 1 0 DXE Legacy Boot
AFh 1 0 1 0 1 1 1 1 DXE Exit Boot Services
B0h 1 0 1 1 0 0 0 0 RT Set Virtual Address Map Begin
B1h 1 0 1 1 0 0 0 1 RT Set Virtual Address Map End
B2h 1 0 1 1 0 0 1 0 DXE Legacy Option ROM init
B3h 1 0 1 1 0 0 1 1 DXE Reset system
B4h 1 0 1 1 0 1 0 0 DXE USB Hot plug
B5h 1 0 1 1 0 1 0 1 DXE PCI BUS Hot plug
B6h 1 0 1 1 0 1 1 0 DXE NVRAM cleanup
B7h 1 0 1 1 0 1 1 1 DXE Configuration Reset
00h 0 0 0 0 0 0 0 0 INT19
S3 Resume
E0h 1 1 0 1 0 0 0 0 S3 Resume PEIM (S3 started)
E1h 1 1 0 1 0 0 0 1 S3 Resume PEIM (S3 boot script)
E2h 1 1 0 1 0 0 1 0 S3 Resume PEIM (S3 Video Repost)
E3h 1 1 0 1 0 0 1 1 S3 Resume PEIM (S3 OS wake)