Acer M5811 manual Bootblock Recovery Code Checkpoints

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Bootblock Recovery Code Checkpoints

 

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.

 

 

 

 

 

POST Code Checkpoints

 

 

 

 

 

 

Checkpoint

Description

 

 

 

 

 

 

03

Disable NMI, Parity, video for EGA, and DMA controllers. Initialize BIOS, POST, Runtime

 

 

 

data area. Also initialize BIOS modules on POST entry and GPNV area. Initialized CMOS

 

 

 

as mentioned in the Kernel Variable "wCMOSFlags."

 

 

 

 

 

 

04

Check CMOS diagnostic byte to determine if battery power is OK and CMOS checksum is

 

 

 

OK. Verify CMOS checksum manually by reading storage area. If the CMOS checksum is

 

 

 

bad, update CMOS with power-on default values and clear passwords. Initialize status

 

 

 

register A.Initializes data variables that are based on CMOS setup questions. Initializes

 

 

 

both the 8259 compatible PICs in the system

 

 

 

 

 

 

05

Initializes the interrupt controlling hardware (generally PIC) and interrupt vector table.

 

 

 

 

 

 

06

Do R/W test to CH-2 count reg. Initialize CH-0 as system timer. Install the POSTINT1Ch

 

 

 

handler. Enable IRQ-0 in PIC for system timer interrupt.Traps INT1Ch vector to

 

 

 

"POSTINT1ChHandlerBlock."

 

 

 

 

 

 

07

Fixes CPU POST interface calling pointer.

 

 

 

 

 

 

08

Initializes the CPU. The BAT test is being done on KBC. Program the keyboard controller

 

 

 

command byte is being done after Auto detection of KB/MS using AMI KB-5.

 

 

 

 

 

 

 

 

 

Chapter 4

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Contents Acer Aspire M5811 Service Guide Revision History Copyright Disclaimer Conventions Service Guide Coverage Table of Contents Chapter FeaturesAudio Optical diskGraphics card Serial ATA controllerSystem Bios Power supplyTotal I/O ports Intel Processor Block DiagramSystem Components Front PanelComponent Rear Panel IOS Hotkey List Hardware Specifications and ConfigurationsSpecification ProcessorSlot Memory Total Memory Memory CombinationsSystem Memory Audio InterfaceEnvironmental Requirements Power ManagementSata Interface USB PortSuspend Mode Power Management FunctionACPI support functionDevice Standby Mode Global Standby 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 FeatureAuto Advanced Chipset FeaturesIntegrated Peripherals Power Management Setup PC Health Status Frequency/Voltage Control Setting a supervisor password Bios Security FeaturesLoad Default Settings Save & Exit Setup Exit Without Saving Disassembly Requirements System DisassemblyPre-disassembly Procedure Removing the Side Panel Removing the Heat Sink Fan Assembly Removing the Processor Removing the VGA Card Removing the TV Card Removing the Mode CardRemoving the Hard Disk Drive Page Removing the Front Bezel Removing the Optical Drive Remove Cables Remove System FAN Removing the Power Supply Removing the Memory Modules Removing the Mainboard System Troubleshooting Checkpoint Description Power-On Self-Test PostBootblock Recovery Code Checkpoints Early CPU Init Start -- Disable Cache ?C Init Local Apic Extended Bios Data Area from base memory DIM Code Checkpoints Post Error Messages List Message Description DisplayedCmos Basic No ROMAtapi Description Displayed VirusDMA Nvram PCI ROMPCI IRQ INS MiscellaneousMessage Displayed Description USB eModule Error MessagesPost Error Symptoms ListError Symptom Action/FRU Processor / Processor Fan Main board and MemoryError Symptom Action/FRU Hard Disk DriveCD/DVD-ROM Drive Video and Monitor Real-time clockAudio ModemKeyboard Power SupplyOther Problems Dimm Undetermined ProblemsPlacement Jumper and Connector InformationLabel Description System Board Header Setting Jumper SettingSetting Jumper System Board Jumper SettingFront USB Front Audio HDA Chapter Sata Connector Pin FAN Header Clear Cmos Header Clrsrtc Intr AUX-IN FRU Field Replaceable Unit List Aspire M5811 Exploded Diagram Name Type ’TY Category Description Part Number Aspire M5811 FRU ListGeforce GTS240 2GB GDDR3 Samsung 256BITS VGA DVI Keyboard Chapter Category Description Part Number Chapter Category Description Part Number Chapter Create Sata RAID Intel RAID SOPChapter Create Sata RAID Create Sata RAID 0+1 Page Intel RAID SOP Windows for WIN7 Page Picture6 Select Menber Hard Drives Picture7 Page Chapter Page Chapter Page Chapter

M5811 specifications

The Acer M5811 is a versatile multimedia desktop PC designed to meet the needs of both home and office users. Known for its solid performance and robust features, the M5811 stands out in Acer's lineup as a reliable option for those looking for a balance between power and efficiency.

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In summary, the Acer M5811 is a well-rounded desktop PC that offers powerful performance, ample storage, and a variety of connectivity options. Its blend of features makes it suitable for a diverse range of users, from casual web surfing to professional-grade multimedia tasks, making it a valuable addition to any tech setup.