Technical Reference 95
Table 11. Post Codes (continued)
Diagnostic LED Decoder
G=Green, R=Red, A=Amber
Post
Code
MSB LSB
Description
9Bh A Off G A
Float Processor Initialize: Performing any required initialization
before the coprocessor test next.
9Eh A G G R
Enable Interrupts 0,1,2: Checking the extended keyboard, keyboard
ID, and NUM Lock key next. Issuing the keyboard ID command next
A2h R Off A Off Report second set of POST errors To Error messager
86h R G G Off
Prepare And Run Setup: Error manager displays and logs POST
errors. Waits for user input for certain errors. Execute setup.
8Bh A Off G G Set Base Expansion Memory Size
8Ch A G Off Off Adjust Setup: Programming the Setup options next.
A5h R G R G Set Display Mode
A7h R G A G OEM Patch 12
A7h R G A G Build SMBIOS table and MP tables.
A7h R G A G Program hotkey and timeout settings in keyboard controller.
A7h R G A G Processor initialization before boot.
A7h R G A G Copy required language strings to shadow RAM.
AAh A Off A Off Clear video screen.
000h Off Off Off Off
One Beep to indicate end of POST. No beep if silent boot is
enabled.
000h Off Off Off Off POST completed. Passing control to INT 19h boot loader next.
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