Adlink nanoX-BT Manuel d'utilisateur Page 55
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nanoX-BT Page 55
8. BIOS Checkpoints, Beep Codes
This section of this document lists checkpoints and beep codes generated by AMI Aptio BIOS. The checkpoints defined in this document are
inherent to the AMIBIOS generic core, and do not include any chipset or board specific checkpoint definitions.
Checkpoints and Beep Codes Definition
A checkpoint is either a byte or word value output to I/O port 80h. The BIOS outputs checkpoints throughout bootblock and Power-On Self
Test (POST) to indicate the task the system is currently executing. Checkpoints are very useful for debugging problems that occur during the
preboot process.
Beep codes are used by the BIOS to indicate a serious or fatal error. They are used when an error occurs before the system video has been
initialized, and generated by the system board speaker.
Aptio Boot Flow
While performing the functions of the traditional BIOS, Aptio 5.x core follows the firmware model described by the Intel Platform Innovation
Framework for EFI (“the Framework”). The Framework refers the following “boot phases”, which may apply to various status code &
checkpoint descriptions:
• Security (SEC) – initial low-level initialization
• Pre-EFI Initialization (PEI) – memory initialization
1
• Driver Execution Environment (DXE) – main hardware initialization
2
• Boot Device Selection (BDS) – system setup, pre-OS user interface & selecting a bootable device (CD/DVD, HDD, USB, Network,
Shell, …)
Viewing BIOS Checkpoints
Viewing all checkpoints generated by the BIOS requires a checkpoint card, also referred to as a OST Card or POST Diagnostic Card. These
are PCI add-in cards that show the value of I/O port 80h on a LED display.
Some computers display checkpoints in the bottom right corner of the screen during POST. This display method is limited, since it only
displays checkpoints that occur after the video card has been activated.
Keep in mind that not all computers using AMI Aptio BIOS enable this feature. In most cases, a checkpoint card is the best tool for viewing
AMI Aptio BIOS checkpoints.
1
Analogous to “bootblock” functionality of legacy BIOS
2
Analogous to “POST” functionality in legacy BIOS
- User’s Manual 1
- Revision History 2
- Preface 3
- Table of Contents 4
- 1. Introduction 8
- 2. Specifications 9
- 2.5. Video 10
- 2.6. Audio 10
- 2.7. LAN 10
- 2.8. Multi I/O and Storage 10
- 2.9. Power Specifications 10
- 2.10. Power Consumption 11
- 2.12. Environmental 11
- 2.14. Operating Systems 11
- Intel® Atom™ 12
- Intel® Celeron® 12
- “Baytrail” 12
- Side View 13
- All tolerances ± 0.05 mm 13
- Other tolerances ± 0.2 mm 13
- 3.1. AB Pin Definitions 14
- Row A Row B 15
- 3.3. AB Signal Description 18
- 3.3.3. DDI0 Channel 19
- 3.3.4. Gigabit Ethernet 19
- 3.3.5. SATA 20
- 3.3.6. PCI Express 20
- 3.3.7. Express Card 20
- 3.3.8. LPC Bus 21
- 3.3.9. USB 1.1/2.0 21
- 3.3.10. USB 3.0 Extension 22
- 3.3.12 22
- SPI (BIOS only) 22
- 3.3.13. Miscellaneous 23
- 3.3.14. SMBus 23
- 3.3.15. I2C Bus 23
- Page 24 nanoX-BT 24
- 3.3.19 25
- Power and Ground 25
- 4. Module interfaces 26
- 4.3. Status LEDs 28
- 4.4. XDP Debug Header 29
- 5.1.1. Voltages 31
- 5.1.2. Main Current 31
- 5.1.3. BMC Status 31
- 5.1.4. Exception Codes 32
- 5.1.5. BMC Flags 32
- 6. System Resources 33
- 6.3.1. PIC Mode 34
- 6.3.2. APIC Mode 34
- Page 36 nanoX-BT 36
- 6.6. SMBus Address Table 37
- 7. BIOS Setup 38
- 7.2. Main 39
- 7.2.6. System Management 40
- Page 42 nanoX-BT 42
- 7.3. Advanced 43
- 7.3.2. Memory 44
- 7.3.3. Graphics 44
- 7.3.4. SATA 45
- 7.3.5. USB 45
- 7.3.6. Network 46
- 7.3.7. PCI and PCIe 46
- 7.3.8. Super IO 48
- 7.3.10. Sound 49
- Page 50 nanoX-BT 50
- 7.3.12. Thermal 51
- 7.3.13. Miscellaneous 51
- 7.4. Boot 52
- 7.5. Security 54
- 7.6. Save & Exit 54
- 8.1. Checkpoint Ranges 56
- 8.2. Standard Checkpoints 56
- 8.2.2. SEC Beep Codes 57
- 8.2.3. PEI Phase 57
- Page 58 nanoX-BT 58
- 8.2.4. PEI Beep Codes 59
- 8.2.5. DXE Phase 59
- Page 60 nanoX-BT 60
- 8.2.6. DXE Beep Codes 62
- 8.2.7. ACPI/ASL Checkpoint 62
- 9. Mechanical Information 64
- 9.2. Thermal Solution 65
- 9.3. Mounting Methods 67
- 9.4. Standoff Types 68
- Safety Instructions 69
- Getting Service 70
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