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2.10 Dr. Debug
Dr. Debug is used to provide code information, which makes troubleshooting even
easier. Please see the diagrams below for reading the Dr. Debug codes.
SEC Phase
Status Code Description
0x00 Not used
Progress Codes
0x01 Power on. Reset type detection (soft/hard)
0x02 AP initialization before microcode loading
0x03 North Bridge initialization before microcode loading
0x04 South Bridge initialization before microcode loading
0x05 OEM initialization before microcode loading
0x06 Microcode loading
0x07 AP initialization after microcode loading
0x08 North Bridge initialization after microcode loading
0x09 South Bridge initialization after microcode loading
0x0A OEM initialization after microcode loading
0x0B Cache initialization
SEC Error Codes
0x0C – 0x0D Reserved for future AMI SEC error codes
0x0E Microcode not found
0x0F Microcode not loaded
PEI Phase
Status Code Description
Progress Codes
0x10 PEI Core is started
0x11 Pre-memory CPU initialization is started
0x12 Pre-memory CPU initialization (CPU module specifi c)
0x13 Pre-memory CPU initialization (CPU module specifi c)
0x14 Pre-memory CPU initialization (CPU module specifi c)
0x15 Pre-memory North Bridge initialization is started
0x16 Pre-Memory North Bridge initialization (North Bridge module specifi c)
0x17 Pre-Memory North Bridge initialization (North Bridge module specifi c)
0x18 Pre-Memory North Bridge initialization (North Bridge module specifi c)
0x19 Pre-memory South Bridge initialization is started
0x1A Pre-memory South Bridge initialization (South Bridge module specifi c)
0x1B Pre-memory South Bridge initialization (South Bridge module specifi c)
0x1C Pre-memory South Bridge initialization (South Bridge module specifi c)
0x1D – 0x2A OEM pre-memory initialization codes
0x2B Memory initialization. Serial Presence Detect (SPD) data reading
0x2C Memory initialization. Memory presence detection
0x2D Memory initialization. Programming memory timing information
0x2E Memory initialization. Confi guring memory
0x2F Memory initialization (other)
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