Intel DG33BU specifications Port 80h Post Codes, Error Messages and Beep Codes

	Error Messages and Beep Codes
Table 37. Port 80h POST Codes
POST Code	Description of POST Operation
	Host Processor
10	Power-on initialization of the host processor (Boot Strap Processor)
11	Host processor Cache initialization (including APs)
12	Starting Application processor initialization
13	SMM initialization
	Chipset
21	Initializing a chipset component
	Memory
22	Reading SPD from memory DIMMs
23	Detecting presence of memory DIMMs
24	Programming timing parameters in the memory controller and the DIMMs
25	Configuring memory
26	Optimizing memory settings
27	Initializing memory, such as ECC init
28	Testing memory
	PCI Bus
50	Enumerating PCI busses
51	Allocating resources to PCI bus
52	Hot Plug PCI controller initialization
53 – 57	Reserved for PCI Bus
	USB
58	Resetting USB bus
59	Reserved for USB
	ATA/ATAPI/SATA
5A	Resetting PATA/SATA bus and all devices
5B	Reserved for ATA
	SMBus
5C	Resetting SMBus
5D	Reserved for SMBus
	Local Console
70	Resetting the VGA controller
71	Disabling the VGA controller
72	Enabling the VGA controller
	Remote Console
78	Resetting the console controller
79	Disabling the console controller
7A	Enabling the console controller

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