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3.
Q-Code LEDs
The Q-Code LED design provides you the 2-digit display, allowing you to know
the system status. Refer to the Q-code table below for details.
Q-Code table
Code
00
01
02
03
04
06
07
08
09
0A
0B
0C – 0D
0E
0F
10
11 – 14
15 – 18
19 – 1C
2B – 2F
30
2-22
Description
Not used
Power on. Reset type detection (soft/hard).
AP initialization before microcode loading
System Agent initialization before microcode loading
PCH initialization before microcode loading
Microcode loading
AP initialization after microcode loading
System Agent initialization after microcode loading
PCH initialization after microcode loading
Initialization after microcode loading
Cache initialization
Reserved for future AMI SEC error codes
Microcode not found
Microcode not loaded
PEI Core is started
Pre-memory CPU initialization is started
Pre-memory System Agent initialization is started
Pre-memory PCH initialization is started
Memory initialization
Reserved for ASL (see ASL Status Codes section below)
Chapter 2: Hardware information
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