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.

 

 

64

Chapter 4

Page 72
Image 72
Acer G5900 manual Bootblock Recovery Code Checkpoints, Checkpoint Description

G5900 specifications

The Acer G5900 is a powerful and versatile desktop computer that has garnered attention for its performance and capability to cater to both casual users and gaming enthusiasts. Utilizing advanced technologies, the G5900 strikes a balance between efficiency and high-end specifications, making it a suitable choice for a variety of tasks.

At the heart of the Acer G5900 is its robust processor. The device typically comes equipped with Intel or AMD processors, such as the Intel Core i5 or the AMD Ryzen series, ensuring quick processing speeds and reliable performance for multitasking and demanding applications. This processing power is essential for handling everything from everyday productivity tasks to more intensive gaming and content creation.

The G5900 is designed with ample memory options, often featuring configurations with up to 16GB of RAM. This is particularly beneficial for users who run multiple applications simultaneously, as it allows for smooth transitions and swift response times. The option to expand memory further adds to its longevity and adaptability, catering to evolving user needs over time.

Storage options on the Acer G5900 include both traditional HDDs and faster SSDs, with capacities ranging from 512GB to 2TB. This flexibility allows users to choose a setup that best fits their requirements, whether they prioritize speed or storage capacity. The inclusion of an SSD can significantly enhance boot times and application loading, elevating the overall user experience.

One of the standout features of the G5900 is its graphics capabilities. Depending on the configuration, it can be equipped with dedicated graphics cards from NVIDIA or AMD, making it apt for gaming enthusiasts and creative professionals alike. These graphics options enable the G5900 to handle modern titles and complex software with ease.

Connectivity is also a key aspect of the Acer G5900. The desktop generally comes with multiple USB ports, HDMI outputs, and sometimes even USB-C connectivity, providing ample options for connecting peripherals and external displays. Wireless options, including Wi-Fi and Bluetooth, enhance its versatility, allowing for seamless integration into modern home networks.

In terms of design, the Acer G5900 showcases a sleek and modern aesthetic, with a compact form factor that fits well in various environments. Its efficient cooling system is designed to maintain optimal performance even during heavy usage while ensuring quiet operation.

Overall, the Acer G5900 combines power, versatility, and modern design. With its cutting-edge specifications, ample storage, and graphics options, it stands out as an excellent choice for users looking to enhance their computing experience, whether for work, play, or everything in between.