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AMI- 2.2x | WinBIOS | PlusBIOS
AWARD- 4-5x PnP
Phoenix- v4.0 | v4.0 Release6
Compaq- General
Dell- General
HP- Vectra | Vectra ES | Vectra QS/RS | Pavilion Series 3100 & 8000
IBM- IBM AT | IBM PS/2
Intel-

HP Pavilion Series 3100/8000 BIOS Post Codes:

0 1 2 3 4 5 6 7 8 9 A B C D E F

Code Meaning
02 Verify real mode
03 Disable NMI
04 Get processor type
06 Initialize system hardware
08 Initialize chipset with POST values
09 Set IN-POST flags
0A Initialize CPU registers
0B Enable CPU registers
0C Initialize cache to POST values
0E Initialize I/O component
0F Initialize local IDE bus
10 Initialize power management
11 Load alternate registers
12 Restore CPU control word during warm boot
13 Initialize PCI bus mastering devices
14 Initialize keyboard controller
16 BIOS ROM checksum
17 Initialize cache before memory size
18 Initialize 8254 timer
1A Initialize DMA controller
1C Reset PIC
20 Test DRAM refresh
22 Test 8742 keyboard controller
24 Set ES segment register to 4GB
26 Enable A-20 line
28 Autosize DRAM
29 Initialize POST memory manager
2A Clear 512K base RAM
2C RAM address line failure
2E RAM data failure, low byte
2F Enable cache before BIOS shadow
30 RAM data failure, high byte
32 Test CPU, BUS clock frequency
33 Initialize POST dispatch manager
34 Test CMOS RAM
35 Initialize alternate chipset registers
36 Warm start shut-down
37 Reinitialize chipset (MB only)
38 Shadow system BIOS ROM
39 Reinitialize cache (MB only)
3A Autosize cache
3C Configure advanced chipset registers
3D Load alternate registers new CMOS values
40 Set initial CPU speed
42 Initialize interrupts
44 Initialize BIOS interrupts
45 POST device initialization
46 Check ROM copyright notice
47 Initialize manager for PCI option ROM's
48 Check video config against CMOS
49 Initialize manager for PCI option ROM's
4A Initialize all video adapters
4B Display quiet boot screen
4C Shadow video BIOS
4E Display BIOS copyright notice
50 Display CPU type & speed
51 Initialize
52 Test keyboard
54 Set key click if enabled
56 Enable keyboard
58 Test for unexpected interrupts
59 Initialize POST display service
5A Display "Press F2 to Enter Setup"
5B Disable CPU cache
5C Test RAM, 512-640K
60 Test extended memory
62 Test extended memory address lines
64 Jump to user patch 1
66 Configure advanced cache registers
67 Initialize multi-processor APIC
68 Enable external & processor caches
69 Set up SMM area
6A Display external L2 cache size
6C Display shadow area message
6E Display high address for UMB recovery
70 Display error message
72 Check for configuration errors
74 Test real time clock
76 Check for keyboard errors
7A Test for key lock on
7C Set up hardware interrupt vectors
7E Initialize coprocessor, if present
80 Disable onboard super I/O ports
81 Late POST device initialization
82 Detect & install external RS-232 ports
83 Configure non-MDC IDE controllers
84 Detect & install external parallel ports
85 Initialize PnP ISA devices
86 Reinitialize onboard I/O ports
87 Configure motherboard configurable devices
88 Initialize BIOS data area
89 Enable NMI's
8A Initialize extended BIOS data area
8B Test & initialize PS/2 mouse
8C Initialize floppy controller
8F Determine number of ATA drives
90 Initialize hard disk controllers
91 Initialize local BUS HD controllers
92 Jump to user patch 2
93 Build MPTABLE for multiprocessor boards
94 Disable A-20 line
95 Install CD-ROM for boot
96 Clear huge ES segment register
97 Fix up multiprocessor table
98 Search for options ROM's
99 Check for smart drive
9A Shadow ROM option
9C Set up power management
9E Enable hardware interrupts
9F Determine number of ATA & SCSI drives
A0 Set time of day
A2 Check key lock
A4 Initialize typematic rate
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 for boot
B4 One short beep before boot
B5 Terminate quiet boot
B6 Check password (optional)
B8 Clear global descriptor table
B9 Clean up all graphics
BA Initialize DMI parameters
BB Initialize PnP option ROM's
BC Clear parity checkers
BD Display multi boot menu
BE Clear screen optional
BF Check virus and backup reminders
C0 Try to boot with Int 19
C1 Initialize POST error manager
C2 Initialize error logging
C3 Initialize error display function
C4 Initialize system error handler
E0 Initialize the chipset
E1 Initialize the bridge
E2 Initialize the processor
E3 Initialize system timer
E4 Initialize system I/O
E5 Check force recovery boot
E6 Checksum BIOS ROM
E7 Got to BIOS
E8 Set huge segment
E9 Initialize multiprocessor
EA Initialize OEM special code
EB Initialize PIC & DMA
EC Initialize memory type
ED Initialize memory type
EE Shadow boot block
EF System memory test
F0 Initialize interrupt vectors
F1 Initialize runtime clock
F2 Initialize video
F3 Initialize beeper
F4 Initialize BOOT
F5 Clear huge segment
F6 Boot to mini-DOS
F7 Boot to full DOS
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