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Phoenix v4.0 BIOS / Motherboard POST Error Codes

QuickPOST SeriesPOST Error CodesUpdated 6/14/2019

Code	Meaning
02	Verify real mode
04	Get
06	Initialize
08	Initialize with initial POST values
09	Set flag
0A	Initialize
0C	Initialize initial POST values
0E	Initialize O
10	Initialize management
11	Load with initial POST values
12	Jump to UserPatch0
14	Initialize keyboard controller
16	BIOS ROM checksum
18	8254 programmable interrupt timer initialization
1A	8237 DMA controller initialization
1C	Reset 8254 programmable interrupt timer
20	Test DRAM refresh
22	Test 8742 keyboard controller
24	Set ES segment register to 4GB
28	Autosize DRAM
2A	Clear 512K base RAM
2C	Test 512K base address lines
2E	Test 512K base memory
32	Test CPU bus-clock frequency
37	Reinitialize the chipset
38	Shadow system BIOS ROM
39	Reinitialize the cache
3A	Autosize cache
3C	Configure advanced chipset registers
3D	Load alternate registers with CMOS values
40	Set initial CPU speed
42	Initialize interrupt vectors
44	Initialize BIOS interrupts
46	Check ROM copyright notice
48	Check video configuration against CMOS
49	Initialize PCI bus and devices
4A	Initialize all video adapters in system
4C	Shadow video BIOS ROM
4E	Display copyright notice
50	Display CPU type and speed
52	Test keyboard
54	Set key click if enabled
56	Enable keyboard
58	Test for unexpected interrupts
5A	Display prompt "Press F2 to Enter Setup"
5C	Test RAM between 512K and 640K
60	Test expanded memory
62	Test extended memory address lines
64	Jump to UserPatch1
66	Configure advanced cache registers
68	Enable external and CPU caches
6A	Display external cache size
6C	Display shadow message
6E	Display non-disposable segments
70	Display error messages
72	Check for configuration errors
74	Test real time clock
76	Check for keyboard errors
7C	Setup hardware interrupts vectors
7E	Test coprocessor if present
80	Disable onboard I/O ports
82	Detect and install external RS232 ports
84	Detect and install external parallel ports
86	Re-on-board I/O ports
88	Initialize BIOS data area
8A	Initialize extended BIOS data area
8C	Initialize floppy controller
90	Initialize hard disk controller
91	Initialize local bus hard disk controller
92	Jump to UserPatch2
94	Disable A20 address line
96	Clear huge ES segment register
98	Search for option ROM's
9A	Shadow option ROM's
9C	Setup power management
9E	Enable hardware interrupts
A0	Set time of day
A2	Check key lock
A8	Erase F2 prompt
AA	Scan for F2 keystroke
AC	Enter setup
AE	Clear in-POST flag
B0	Check for errors
B2	POST done; prepare to boot operating system
B4	One beep
B6	Check password (optional)
B8	clear global descriptor table
BC	Clear parity checkers
BE	Clear screen (optional)
BF	Check virus and backup reminders
C0	Try to boot interrupt 19
D0	Interrupt handler error
D2	Unknown interrupt error
D4	Pending interrupt error
D6	Initialize option ROM error
D8	Shutdown error
DA	Extended block move
DC	Shutdown 10 error
E2	Initialize the chipset
E3	Initialize refresh counter
E4	Check for forced flash
E5	Check HW status of ROM
E6	BIOS ROM is ok
E7	Do a complete RAM test
E8	Do OEM initialization
E9	Initialize interrupt controller
EA	Read in bootstrap code
EB	Initialize all vectors
EC	Boot the flash program
ED	Initialize the boot device
EE	Boot code was read ok