Acer R3700 manual Bootblock Recovery Code Checkpoints, Checkpoint Description

Page 49

Bootblock Recovery Code Checkpoints

The Bootblock recovery code gets control when the BIOS determines that a BIOS recovery needs to occur because the user has forced the update or the BIOS checksum is corrupt. The following table describes the type of checkpoints that may occur during the Bootblock recovery portion of the BIOS.

NOTE: Checkpoints may differ between different platforms based on system configuration. Checkpoints maychange due to vendor requirements, system chipset or option ROMs from add-in PCI devices.

Checkpoint

Description

 

 

E0

Initialize the floppy controller in the super I/O. Some interrupt vectors are initialized. DMA

 

controller is initialized. 8259 interrupt controller is initialized. L1 cache is enabled.

 

 

E9

Set up floppy controller and data. Attempt to read from floppy.

 

 

EA

Enable ATAPI hardware. Attempt to read from ARMD and ATAPI CDROM.

 

 

EB

Disable ATAPI hardware. Jump back to checkpoint E9.

 

 

EF

Read error occurred on media. Jump back to checkpoint EB.

 

 

F0

Search for pre-defined recovery file name in root directory.

 

 

F1

Recovery file not found.

 

 

F2

Start reading FAT table and analyze FAT to find the clusters occupied by the recovery file.

 

 

F3

Start reading the recovery file cluster by cluster.

 

 

F5

Disable L1 cache.

 

 

FA

Check the validity of the recovery file configuration to the current configuration of the flash

 

part.

 

 

FB

Make flash write enabled through chipset and OEM specific method. Detect proper flash

 

part. Verify that the found flash part size equals the recovery file size.

 

 

F4

The recovery file size does not equal the found flash part size.

 

 

FC

Erase the flash part

 

 

FD

Program the flash part.

 

 

FF

The flash has been updated successfully. Make flash write disabled. Disable ATAPI

 

hardware. Restore CPUID value back into register. Give control to F000 ROM at

 

F000:FFF0h.

 

 

Chapter 4

43

Image 49
Contents Acer Aspire R3700 Service Guide Revision History Copyright Disclaimer Conventions Service Guide Coverage Table of Contents Chapter FeaturesHard disk On-Board Graphic solutionOptical disk Serial ATA controllerSystem Bios All On-Board ConnectorsAdapter Block Diagram Front Panel System ComponentsRear Panel Bios Hotkey List Hardware Specifications and ConfigurationsProcessor Main Board Major ChipsSystem Memory Memory CombinationsAudio Interface Sata Interface Power ManagementUSB Port Environmental RequirementsDevice Standby Mode Power Management FunctionACPI support functionGlobal Standby Mode Suspend ModeSystem Utilities Cmos Setup UtilityNavigating Through the Setup Utility Entering Cmos setupParameter Description Setup Utility MenusProduct Information Parameter Description Option Standard Cmos FeaturesEnabled Advanced Bios FeatureAdvanced Chipset Features Integrated Peripherals Power Management Setup PC Health Status Frequency/Voltage Control Bios Security Features Load Default Settings Save and Exit Setup Exit Without Saving Disassembly Requirements System DisassemblyPre-disassembly Procedure Removing the Side Panel Removing the CPU Fan Removing the CPU Cooler Removing the Memory Modules Removing the Front D/B Removing the Wireless LAN Card Removing the S/PDIF Cover Removing the Main Board Removing the Hard Disk Drive Remove the Battery System Troubleshooting System External Inspection Power System CheckSystem Internal Inspection Beep Codes Bootblock Initialization Code Checkpoints Viewing Bios checkpointsCheckpoints Checkpoint Description Bootblock Recovery Code CheckpointsChoose OK and press Enter key Bios RecoveryPlacement Jumper and Connector InformationSetting Jumper Jumper SettingJumper/Header Name Function Definition System Board Pin DefinitionFRONTUSB1 5USBREARPW Front USB2 2USB0FBJ 6GND 7GND 8GND 95VCONN Gndgnd SD-9SDDAT2 XD-18XDD7 FRU Field Replaceable Unit List Name Aspire R3700 Exploded DiagramAspire R3700 FRU List Category Description Part Number Exploded Diagram ItemWD3200BEVT-22A23T0,ML320S,WD Sata Chapter Category Description Part Number Exploded Chapter Category Description Part Number Exploded Diagram Item