SUPER MICRO Computer SUPERSERVER 6012P-6 User Manual download pdf (Page 99)

Appendix B: PhoenixBIOS POST Codes

B-1

This section lists the POST (Power On Self Test) codes for the PhoenixBIOS. POST

codes are divided into two categories: recoverable and terminal.

Recoverable POST Errors

When a recoverable type of error occurs during POST, the BIOS will display

an POST code that describes the problem. BIOS may also issue one of the

following beep codes:

1 long and two short beeps - video configuration error

1 continuous long beep - no memory detected

Terminal POST Errors

If a terminal type of error occurs, BIOS will shut down the system. Before

doing so, BIOS will write the error to port 80h, attempt to initialize video and

write the error in the top left corner of the screen.

The following is a list of codes that may be written to port 80h.

Appendix B

PhoenixBIOS POST Codes

POST Code Description

02h Verify Real Mode

03h Disable Non-Maskable Interrupt (NMI)

04h Get CPU type

06h Initialize system hardware

07h Disable shadow and execute code from the ROM.

08h Initialize chipset with initial POST values

09h Set IN POST flag

0Ah Initialize CPU registers

0Bh Enable CPU cache

0Ch Initialize caches to initial POST values

0Eh Initialize I/O component

0Fh Initialize the local bus IDE

10h Initialize Power Management

11h Load alternate registers with initial POST values

12h Restore CPU control word during warm boot

13h Initialize PCI Bus Mastering devices

14h Initialize keyboard controller

16h 1-2-2-3 BIOS ROM checksum

1 2 ... 94 95 96 97 98 99 100 101 102 103 104 ... 109 110

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SUPER MICRO Computer SUPERSERVER 6012P-6 User Manual Page 99