BIOS Debug Hex Codes Decoded

[darkhawk]

Leaving this here so everyone, moderators and users, can have the benefit of having a single place to go look for reference. If anyone notices anything wrong with these, please let me know.



Please keep this topic free of support questions. This is strictly meant for the hex codes for everyone's benefit.

Progress Codes

00 - Not used
01 - Power on. Reset type detection (soft/hard)
02 - AP initialization before microcode loading
03 - System Agent initialization before microcode loading
04 - PCH initialization before microcode loading
05 - OEM initialization before microcode loading
06 - Microcode loading
07 - AP initialization after microcode loading
08 - System Agent initialization after microcode loading
09 - PCH initialization after microcode loading
0A - OEM initialization after microcode loading
0B - Cache initialization

SEC Error Codes

0C - Reserved for future AMI SEC error codes
0D - Reserved for future AMI SEC error codes
0E - Microcode not found
0F - Microcode not loaded

PEI Phase

10 - PEI Core is started
11 - Pre-memory CPU initialization is started
12 - Pre-memory CPU initialization (CPU module specific)
13 - Pre-memory CPU initialization (CPU module specific)
14 - Pre-memory CPU initialization (CPU module specific)
15 - Pre-memory System Agent initialization is started
16 - Pre-Memory System Agent initialization (System Agent module specific)
17 - Pre-Memory System Agent initialization (System Agent module specific)
18 - Pre-Memory System Agent initialization (System Agent module specific)
19 - Pre-memory PCH initialization is started
1A - Pre-memory PCH initialization (PCH module specific)
1B - Pre-memory PCH initialization (PCH module specific)
1C - Pre-memory PCH initialization (PCH module specific)
1D - OEM pre-memory initialization codes
1E - OEM pre-memory initialization codes
1F - OEM pre-memory initialization codes

20 - OEM pre-memory initialization codes
21 - OEM pre-memory initialization codes
22 - OEM pre-memory initialization codes
23 - OEM pre-memory initialization codes
24 - OEM pre-memory initialization codes
25 - OEM pre-memory initialization codes
26 - OEM pre-memory initialization codes
27 - OEM pre-memory initialization codes
28 - OEM pre-memory initialization codes
29 - OEM pre-memory initialization codes
2A - OEM pre-memory initialization codes
2B - Memory initialization. Serial Presence Detect (SPD) data reading
2C - Memory initialization. Memory presence detection
2D - Memory initialization. Programming memory timing information
2E - Memory initialization. Confi guring memory
2F - Memory initialization (other)

30 - Reserved for ASL (see ASL Status Codes section below)
31 - Memory Installed
32 - CPU post-memory initialization is started
33 - CPU post-memory initialization. Cache initialization
34 - CPU post-memory initialization. Application Processor(s) (AP) initialization
35 - CPU post-memory initialization. Boot Strap Processor (BSP) selection
36 - CPU post-memory initialization. System Management Mode (SMM) initialization
37 - Post-Memory System Agent initialization is started
38 - Post-Memory System Agent initialization (System Agent module specific)
39 - Post-Memory System Agent initialization (System Agent module specific)
3A - Post-Memory System Agent initialization (System Agent module specific)
3B - Post-Memory PCH initialization is started
3C - Post-Memory PCH initialization (PCH module specific)
3D - Post-Memory PCH initialization (PCH module specific)
3E - Post-Memory PCH initialization (PCH module specific)
3F - OEM post memory initialization codes

40 - OEM post memory initialization codes
41 - OEM post memory initialization codes
42 - OEM post memory initialization codes
43 - OEM post memory initialization codes
44 - OEM post memory initialization codes
45 - OEM post memory initialization codes
46 - OEM post memory initialization codes
47 - OEM post memory initialization codes
48 - OEM post memory initialization codes
49 - OEM post memory initialization codes
4A - OEM post memory initialization codes
4B - OEM post memory initialization codes
4C - OEM post memory initialization codes
4D - OEM post memory initialization codes
4E - OEM post memory initialization codes
4F - DXE IPL is started

PEI Error Codes

50 - Memory initialization error. Invalid memory type or incompatible memory speed
51 - Memory initialization error. SPD reading has failed
52 - Memory initialization error. Invalid memory size or memory modules do not match
53 - Memory initialization error. No usable memory detected
54 - Unspecifi ed memory initialization error
55 - Memory not installed
56 - Invalid CPU type or Speed
57 - CPU mismatch
58 - CPU self test failed or possible CPU cache error
59 - CPU micro-code is not found or micro-code update is failed
5A - Internal CPU error
5B - reset PPI is not available
5C - Reserved for future AMI error codes
5D - Reserved for future AMI error codes
5E - Reserved for future AMI error codes
5F - Reserved for future AMI error codes

DXE Phase

60 - DXE Core is started
61 - NVRAM initialization
62 - Installation of the PCH Runtime Services
63 - CPU DXE initialization is started
64 - CPU DXE initialization (CPU module specific)
65 - CPU DXE initialization (CPU module specific)
66 - CPU DXE initialization (CPU module specific)
67 - CPU DXE initialization (CPU module specific)
68 - PCI host bridge initialization
69 - System Agent DXE initialization is started
6A - System Agent DXE SMM initialization is started
6B - System Agent DXE initialization (System Agent module specific)
6C - System Agent DXE initialization (System Agent module specific)
6D - System Agent DXE initialization (System Agent module specific)
6E - System Agent DXE initialization (System Agent module specific)
6F - System Agent DXE initialization (System Agent module specific)

70 - PCH DXE initialization is started
71 - PCH DXE SMM initialization is started
72 - PCH devices initialization
73 - PCH DXE Initialization (PCH module specific)
74 - PCH DXE Initialization (PCH module specific)
75 - PCH DXE Initialization (PCH module specific)
76 - PCH DXE Initialization (PCH module specific)
77 - PCH DXE Initialization (PCH module specific)
78 - ACPI module initialization
79 - CSM initialization
7A - Reserved for future AMI DXE codes
7B - Reserved for future AMI DXE codes
7C - Reserved for future AMI DXE codes
7D - Reserved for future AMI DXE codes
7E - Reserved for future AMI DXE codes
7F - Reserved for future AMI DXE codes

80 - OEM DXE initialization codes
81 - OEM DXE initialization codes
82 - OEM DXE initialization codes
83 - OEM DXE initialization codes
84 - OEM DXE initialization codes
85 - OEM DXE initialization codes
86 - OEM DXE initialization codes
87 - OEM DXE initialization codes
88 - OEM DXE initialization codes
89 - OEM DXE initialization codes
8A - OEM DXE initialization codes
8B - OEM DXE initialization codes
8C - OEM DXE initialization codes
8D - OEM DXE initialization codes
8E - OEM DXE initialization codes
8F - OEM DXE initialization codes

90 - Boot Device Selection (BDS) phase is started
91 - Driver connecting is started
92 - PCI Bus initialization is started
93 - PCI Bus Hot Plug Controller Initialization
94 - PCI Bus Enumeration 32
95 - PCI Bus Request Resources
96 - PCI Bus Assign Resources
97 - Console Output devices connect
98 - Console input devices connect
99 - Super IO Initialization
9A - USB initialization is started
9B - USB Reset
9C - USB Detect
9D - USB Enable
9E - Reserved for future AMI codes
9F - Reserved for future AMI codes

A0 - IDE initialization is started
A1 - IDE Reset
A2 - IDE Detect
A3 - IDE Enable
A4 - SCSI initialization is started
A5 - SCSI Reset
A6 - SCSI Detect
A7 - SCSI Enable
A8 - Setup Verifying Password
A9 - Start of Setup
AA - Reserved for ASL (see ASL Status Codes section below)
AB - Setup Input Wait
AC - Reserved for ASL (see ASL Status Codes section below)
AD - Ready To Boot event
AE - Legacy Boot event
AF - Exit Boot Services event

B0 - Runtime Set Virtual Address MAP Begin
B1 - Runtime Set Virtual Address MAP End
B2 - Legacy Option ROM Initialization
B3 - System Reset
B4 - USB hot plug
B5 - PCI bus hot plug
B6 - Clean-up of NVRAM
B7 - Confi guration Reset (reset of NVRAM settings)
B8 - Reserved for future AMI codes
B9 - Reserved for future AMI codes
BA - Reserved for future AMI codes
BB - Reserved for future AMI codes
BC - Reserved for future AMI codes
BD - Reserved for future AMI codes
BE - Reserved for future AMI codes
BF - Reserved for future AMI codes

C0 - OEM BDS initialization codes
C1 - OEM BDS initialization codes
C2 - OEM BDS initialization codes
C3 - OEM BDS initialization codes
C4 - OEM BDS initialization codes
C5 - OEM BDS initialization codes
C6 - OEM BDS initialization codes
C7 - OEM BDS initialization codes
C8 - OEM BDS initialization codes
C9 - OEM BDS initialization codes
CA - OEM BDS initialization codes
CB - OEM BDS initialization codes
CC - OEM BDS initialization codes
CD - OEM BDS initialization codes
CE - OEM BDS initialization codes
CF - OEM BDS initialization codes

DXE Error Codes

D0 - CPU initialization error
D1 - System Agent initialization error
D2 - PCH initialization error
D3 - Some of the Architectural Protocols are not available
D4 - PCI resource allocation error. Out of Resources
D5 - No Space for Legacy Option ROM
D6 - No Console Output Devices are found
D7 - No Console Input Devices are found
D8 - Invalid password
D9 - Error loading Boot Option (LoadImage returned error)
DA - Boot Option is failed (StartImage returned error)
DB - Flash update is failed
DC - Reset protocol is not available

S3 Resume Progress Codes

E0 - S3 Resume is stared (S3 Resume PPI is called by the DXE IPL)
E1 - S3 Boot Script execution
E2 - Video repost
E3 - OS S3 wake vector call
E4 - Reserved for future AMI progress codes
E5 - Reserved for future AMI progress codes
E6 - Reserved for future AMI progress codes
E7 - Reserved for future AMI progress codes

S3 Resume Error Codes

E8 - S3 Resume Failed
E9 - S3 Resume PPI not Found
EA - S3 Resume Boot Script Error
EB - S3 OS Wake Error
EC - Reserved for future AMI error codes 31
ED - Reserved for future AMI error codes 31
EE - Reserved for future AMI error codes 31
EF - Reserved for future AMI error codes 31

Recovery Progress Codes

F0 - Recovery condition triggered by firmware (Auto recovery)
F1 - Recovery condition triggered by user (Forced recovery)
F2 - Recovery process started
F3 - Recovery fi rmware image is found
F4 - Recovery fi rmware image is loaded
F5 - Reserved for future AMI progress codes
F6 - Reserved for future AMI progress codes
F7 - Reserved for future AMI progress codes

Recovery Error Codes

F8 - Recovery PPI is not available
F9 - Recovery capsule is not found
FA - Invalid recovery capsule
FB - Reserved for future AMI error codes
FC - Reserved for future AMI error codes
FD - Reserved for future AMI error codes
FE - Reserved for future AMI error codes
FF - Reserved for future AMI error codes

ACPI/ASL Checkpoints

01 - System is entering S1 sleep state
02 - System is entering S2 sleep state
03 - System is entering S3 sleep state
04 - System is entering S4 sleep state
05 - System is entering S5 sleep state
10 - System is waking up from the S1 sleep state
20 - System is waking up from the S2 sleep state
30 - System is waking up from the S3 sleep state
40 - System is waking up from the S4 sleep state
AC - System has transitioned into ACPI mode. Interrupt controller is in APIC mode
AA - System has transitioned into ACPI mode. Interrupt controller is in APIC mode

Beeps​	Error Message​	Description​
1 short	DRAM refresh failure	The programmable interrupt timer or programmable interrupt controller has probably failed
2 short	Memory parity error	A memory parity error has occurred in the first 64K of RAM. The RAM IC is probably bad
3 short	Base 64K memory failure	A memory failure has occurred in the first 64K of RAM. The RAM IC is probably bad
4 short	System timer failure	The system clock/timer IC has failed or there is a memory error in the first bank of memory
5 short	Processor error	The system CPU has failed
6 short	Gate A20 failure	The keyboard controller IC has failed, which is not allowing Gate A20 to switch the processor to protected mode. Replace the keyboard controller
7 short	Virtual mode processor exception error	The CPU has generated an exception error because of a fault in the CPU or motherboard circuitry
8 short	Display memory read/write error	The system video adapter is missing or defective
9 short	ROM checksum error	The contents of the system BIOS ROM does not match the expected checksum value. The BIOS ROM is probably defective and should be replaced
10 short	CMOS shutdown register read/write error	The shutdown for the CMOS has failed
11 short	Cache error	The L2 cache is faulty
1 long, 2 short	Failure in video system	An error was encountered in the video BIOS ROM, or a horizontal retrace failure has been encountered
1 long, 3 short	Memory test failure	A fault has been detected in memory above 64KB
1 long, 8 short	Display test failure	The video adapter is either missing or defective
2 short	POST Failure	One of the hardware testa have failed
1 long	POST has passed all tests

Newer AMI EZ-Flex BIOS codes

01	NMI disabled; Start CPU flag test
02	Power on delay
03	Initialize system chipset
04	Check keyboard for soft/hard reset
05	Enable ROM
06	ROM BIOS checksum tested
07	8042 keyboard controller tested
08	8042 keyboard controller tested
09	8042 keyboard controller tested
0A	8042 keyboard controller tested
0B	8042 protected mode tested
0C	8042 keyboard controller tested
0D	CMOS RAM shutdown register tested
0E	CMOS checksum tested
0F	CMOS initialization
10	CMOS/RTC status OK
11	Disable DMA and PIC
12	Video display disabled
13	Chipset and memory initialized
14	8254 PIT tested
15	PIT channel 2 tested
16	PIT channel 1 tested
17	PIT channel 0 tested
18	PIT memory refresh tested
19	PIT memory refresh tested
1A	Check 15 microsecond refresh (PIT)
1B	Base 64K memory tested
20	Address lines tested
21	Base 64K parity memory tested
22	Memory Read/Write tested
23	Perform setup's prior to initialization of the vector table
24	Initialize BIOS vector table in lower 1KB of system RAM
25	8042 keyboard controller tested
26	Global for keyboard controller tested
27	Perform setups for vector table initialization
28	Monochrome video mode tested
29	Video (CGA) color mode tested
2A	Parity enable tested
2B	Check for optional ROM's
2C	Check for video ROM
2D	Determine if EGA/VGA is installed
2E	Video memory is tested if non EGA/VGA
2F	Video memory tested
30	Video adapter tested
31	Alternate video memory tested
32	Alternate video adapter tested
33	Video mode tested
34	Video mode tested
35	BIOS ROM data area initialized
36	Power on display cursor set
37	Power on message displayed
38	Cursor position read
39	Display cursor reference
3A	Display Setup message
40	Protected mode tested
41	Build descriptor tables
42	CPU enters protected mode
43	Protected mode interrupt enabled
44	Descriptor tables checked
45	Memory size checked
46	Memory read/Write tested
47	Base 640K memory tested
48	Memory below 1MB checked for
49	Memory above 1MB checked for
4A	ROM BIOS data area checked
4B	Memory below 1MB cleared for soft reset
4C	Memory above 1MB cleared for soft reset
4D	Update CMOS memory size
4E	Display base 64K memory test
4F	Memory test on base 640K performed
50	RAM size updated for shadow operation
51	Extended memory test performed
52	System is prepared for real mode
53	CPU is returned to real mode
54	CPU registers are returned to real mode
55	A20 gate disabled
56	BIOS data area rechecked
57	BIOS data area check complete
58	Setup message displayed
59	DMA register page tested
60	Display memory verified
61	DMA #1 tested
62	DMA #2 tested
63	Perform BIOS data area check
64	BIOS data area checked
65	DMA initialized
66	8259 PIC initialized
67	Keyboard tested
80	Keyboard reset
81	Check for stuck key and batch test
82	8042 keyboard controller tested
83	Lock key checked
84	Memory size compared to CMOS
85	Password and soft error checked
86	CMOS equipment checked performed
87	CMOS setup performed if selected
88	Main chipset reinitialized after CMOS setup
89	Power on message displayed
8A	Mouse check and wait message displayed
8B	Any ROM's attempted to be shadowed
8C	System initialized through CMOS settings
8D	Hard drives and floppy drives reset
8E	Floppy disk setup compared to CMOS settings
8F	Floppy controller initialized
90	Hard disks setup compared to CMOS settings
91	Hard disk controller initialized
92	BIOS data table checked
93	BIOS data table check complete
94	Memory size set
95	Display memory verified
96	All Interrupts cleared
97	Optional ROM's checked for
98	All Interrupts cleared
99	Timer data setup
9A	Serial ports checked for
9B	All Interrupts cleared
9C	Math coprocessor checked
9D	All Interrupts cleared
9E	Extended keyboard checked
9F	NumLock set on keyboard
A0	Keyboard reset
A1	Cache memory size tested
A2	Display any soft errors
A3	Typematic rate set
A4	Memory wait states set
A5	Display is cleared
A6	Parity and NMI enabled
A7	All Interrupts cleared
A8	System control is turned over to ROM at E0000
A9	All Interrupts cleared
AA	Displayed configuration
00	Call to Interrupt 19 for boot loader

 

[darkhawk]

Fixed. 

I really am not a fan of the forums and how they sometimes paste in weird junk and formatting.

 

[darkhawk]

These were all taken from the Z790 Ace instruction manual, and are probably more appropriate for Z690 and Z790/X570 and X670 going forward.......