Port 80h Card
Jika anda sering mengtak atik bios komputer anda, tentu anda pernah mebaca POST (Power On-Self Test), Selama Power-On Self Test (POST) diaktifkan, BIOS akan mengirimkan kode (POST kode) ke I / O port 80h. Jika POST gagal, kode POST terakhir yang dihasilkan dibiarkan pada port 80h. Kode ini dapat digunakan untuk menentukan penyebab kesalahan terjadi pada hardware/motherboard anda.
First, mari kita pahami bunyi beep pada Motherboard Intel.
Tipe | Pola | Frekwensi
Memory error | 3x beep panjang | 1280 Hz
=============================================
Thermal warning | Empat jenis bunyi. | nada tinggi: 2.000 Hz
Nada tinggi, nada Rendah: 1.600 Hz
nada rendah,
nada tinggi,
nada rendah
BIOS Error Messages
Error Message :
A processor which was not meant to be used with this board has been detected. Using an unsupported processor may result in improper operation, damage to the desktop board or processor or reduced product life. System will shut down in 10 seconds.
Penjelasan : Processor yg terinstal tidak kompatibel dengan Desktop board
Error Message :
CMOS Battery Low
Penjelasan : Segera ganti batere bios, karena pesan tsb adalah peringatan bahwa batre bios anda kehlangan power.
Error Message :
CMOS Checksum Bad
Penjelasan : checksum CMOS salah. CMOS memori mungkin telah rusak. Jalankan Instalasi Ulang
Error Message :
Memory Size Decreased
Penjelasan :
Ukuran memori telah menurun sejak boot terakhir. Jika memori tidak dihapus maka memori mungkin kondisi memori bertambah buruk.
Error Message :
No Boot Device Available
Penjelasan : system tidak dapat menemukan perangkat untuk booting.
Perangkat 80hcard dapat berupa kartu yg ditancapkan pada slot PCI tetapi ada juga sebagan MB intel yg telah include didalamnya sebuah led untuk membaca POST code
Port 80h POST Code Ranges
Range | Kategori/Subsystem
00 – 0F kode Debug: dapat digunakan pada PEIM/driver untuk melakukan debug.
10 – 1F Host Processors
20 – 2F Memory/Chipset
30 – 3F Recovery
40 – 4F Reserved for future use.
50 – 5F I/O Busses: PCI, USB, ISA, ATA, etc.
60 – 6F Reserved for future use (for new busses).
70 – 7F Output Devices: All output consoles.
80 – 8F Reserved for future use (new output console codes).
90 – 9F Input devices: Keyboard/Mouse.
A0 – AF Reserved for future use (new input console codes).
B0 – BF Boot Devices: Includes fixed media and removable media.
C0 – CF Reserved for future use.
D0 – DF Boot device selection.
E0 – FF E0 - EE: Miscellaneous codes
F0 – FF: FF processor exception
Port 80h POST Codes
POST Code- Description of POST Operation
00 - 0F Debug Codes: can be used by any PEIM/driver for debug
10 - 1F 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
14 LAN initialization
15 Exit early platform init driver
16 SMBUS driver inititialization
17 Entry to SMBUS execute read/write
19 Entry to CK505 programming
1F Unrecoverable CPU error
20 - 2F Memory / Chipset
21 Initializing a chipset component
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
2F No memory detected or no useful memory detected
30 - 3F Recovery
30 Crisis Recovery has initiated per User request
31 Crisis Recovery has initiated by software (corrupt flash)
34 Loading recovery capsule
35 Handing off control to the recovery capsule
3F Unable to recover
50 - 5F I/O Busses (PCI, USB, ISA, ATA, etc.)
50 Enumerating PCI busses
51 Allocating resources to PCI bus
52 Hot Plug PCI controller initialization
53 – 57 Reserved for PCI Bus
58 Resetting USB bus
59 Reserved for USB
5A Resetting PATA/SATA bus and all devices
5B Reserved for ATA
5C Resetting SMBUS
5D Reserved for SMBUS
5F Unrecoverable I/O bus error
70 - 7F Output Devices
70 Sedang Mereset VGA controller
71 Mendisable VGA controller
72 Me-Enable VGA controller
78 Mereset console controller
79 Men non aktifkan console controller
7A Mengaktifkan console controller
7F Tidak dapat memulihkan prangkat Output
90 - 9F Input Devices
90 Resetting keyboard
91 Disabling keyboard
92 Detecting presence of keyboard
93 Enabling the keyboard
94 Clearing keyboard input buffer
95 Instructing keyboard controller to run Self Test (PS2 only)
98 Resetting mouse
99 Disabling mouse
9A Detecting presence of mouse
9B Enabling mouse
9F Unrecoverable input device (keyboard or mouse) error
B0 - BF Boot Devices
B0 Resetting fixed media
B1 Disabling fixed media
B2 Detecting presence of a fixed media (IDE hard drive detection etc.)
B3 Enabling/configuring a fixed media
B8 Resetting removable media
B9 Disabling removable media
BA Detecting presence of a removable media (IDE, CD-ROM detection, etc.)
BC Enabling/configuring a removable media
BF Unrecoverable boot device error
D0 - DF Boot Device Selection
Dy Trying boot selection y (y=0 to 15)
E0 - FF Miscellaneous Codes
E0 Started dispatching PEIMs (emitted on first report of EFI_SW_PC_INIT_BEGIN EFI_SW_PEI_PC_HANDOFF_TO_NEXT)
E2 Permanent memory found
E1, E3 Reserved for PEI/PEIMs
E4 Entered DXE phase
E5 Started dispatching drivers
E6 Started connecting drivers
E7 Waiting for user input
E8 Checking password
E9 Entering BIOS setup
EB Calling Legacy Option ROMs
EF Boot/S3 resume failure
F4 Entering Sleep state
F5 Exiting Sleep state
F8 EFI boot service ExitBootServices ( ) has been called
F9 EFI runtime service SetVirtualAddressMap ( ) has been called
FA EFI runtime service ResetSystem ( ) has been called
FF Processor exception
Typical Port 80h POST Sequence
nilai kode Port 80h biasanya akan meningkat selama proses boot. Kode awal adalah untuk subsistem yang berad lebih dekat dengan prosesor dan kode selanjutnya adalah untuk peripheral lainnya. Biasanya, urutan inisialisasi adalah Processor - Memori> - bus> -> Output / Input Devices -> Boot Devices
Penjelasan POST Code
21 Initializing a chipset component
22 Reading SPD from memory DIMMs
23 Detecting presence of memory DIMMs
25 Configuring memory
28 Testing memory
34 Loading recovery capsule
E4 Entered DXE phase
12 Starting Application processor initialization
13 SMM initialization
50 Enumerating PCI busses
51 Allocating resourced to PCI bus
92 Detecting the presence of the keyboard
90 Resetting keyboard
94 Clearing keyboard input buffer
95 Keyboard Self Test
EB Calling Video BIOS
58 Resetting USB bus
5A Resetting PATA/SATA bus and all devices
92 Detecting the presence of the keyboard
90 Resetting keyboard
94 Clearing keyboard input buffer
5A Resetting PATA/SATA bus and all devices
28 Testing memory
90 Resetting keyboard
94 Clearing keyboard input buffer
E7 Waiting for user input
01 INT 19
00 Ready to boot
Berlaku Untuk Mtherboard:
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