Appendix A: Post Codes; Post Progress Codes And Messages; Table 8. Port 80 Post Code Leds - Intel S7000FC4UR - Server System - 0 MB RAM Product Manual

Appendix A: POST Codes

The system BIOS displays error messages on the video screen. Before video initialization,
beep codes inform you of errors. POST error codes are logged in the event log. The BIOS
displays POST error codes on the video monitor.
Eight light-emitting diodes indicate the raw binary output of port 80 values. These LEDs
are arranged so you can see a direct correlation to the binary equivalent. The table shows
the correlation of port 80 post code bit to LED reference designator.

POST Progress Codes and Messages

The system BIOS complies with the EFI Framework POST Progress Code specification
by reporting 32-bit status codes at various points during POST that contain class, subclass,
and operation information. The class and subclass fields describe the type of hardware that
is being initialized. The operation field represents the specific initialization activity.

Table 8. Port 80 POST Code LEDs

Port 80 POST Code Bit
7 (MSB)
6
5
4
3
2
1
0 (LSB)
LED Reference Designator
DS4E8
DS4E7
DS4E6
DS4E5
DS4E4
DS4E3
DS4E2
DS4E1
137