Code

Description

 

 

0x27

Enable DRAM Channel I/O Buffers

0x28

Enable all clocks on populated rows

 

 

0x29

Perform JEDEC memory initialization for all memory rows

 

 

0x30

Perform steps required after memory init

 

 

0x31

Program DRAM throttling and throttling event registers

 

 

0x32

Setup DRAM control register for normal operation and enable

 

 

0x33

Enable RCOMP

 

 

0x34

Clear DRAM initialization bit in the SB

 

 

0x35

Initialization Sequence Completed, program graphic clocks

 

 

0xAF

Disable access to the XMM registers

 

 

BDS & Specific action:

Code

Description

 

 

0x00

Report the legacy boot is happening

0x12

Wake up the Aps

 

 

0x13

Initialize SMM Private Data and relocate BSP SMBASE

 

 

0x21

PC init begin at the stage1

 

 

0x27

Report every memory range do the hardware ECC init

 

 

0x28

Report status code of every memory range

 

 

0x50

Get the root bridge handle

 

 

0x51

Notify pci bus driver starts to program the resource

 

 

0x58

Reset the host controller

 

 

0x5A

IdeBus begin initialization

 

 

0x70

Simple Text Output Protocol Functions(VGA class reset)

 

 

0x71

Report that VGA Class driver is being disabled

 

 

0x72

Report that VGA Class driver is being enabled

 

 

0x78

Terminal Console In reset and Console Out reset

 

 

0x79

Report that the remote terminal is being disabled

 

 

0x7A

Report that the remote terminal is being enabled

 

 

0x90

Keyboard reset

 

 

0x91

USB Keyboard disable

 

 

0x92

Keyboard detection

 

 

0x93

Report that the usb keyboard is being enabled

 

 

0x94

Clear the keyboard buffer

 

 

0x95

Init Keyboard

 

 

0x98

Mouse reset

 

 

0x99

Mouse disable

 

 

0x9A

Detect PS2 mouse

 

 

0x9B

Report that the mouse is being enabled

 

 

0xB8

Peripheral removable media reset (ex: IsaFloppy, USB device)

 

 

0xB9

Peripheral removable media disable

 

 

0xBB

Peripheral removable media enable

 

 

0xE4

Report Status Code here for DXE_ENTRY_POINT once it is available

 

 

138

Chapter 4

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Image 148
Acer 7715Z, 7315 manual BDS & Specific action

7715Z, 7315 specifications

The Acer 7715Z and 7315 laptops represent a blend of functionality and performance that caters to both casual users and professionals alike. Designed with a focus on multimedia and computing efficiency, these models are ideal for users who require a reliable machine for both work and entertainment.

The Acer 7715Z features a 17-inch widescreen display, which offers a vibrant viewing experience thanks to its high resolution and excellent color reproduction. This model is equipped with Intel’s Core 2 Duo processor, providing a robust performance for multitasking and demanding applications. Coupled with up to 4GB of RAM and a spacious hard drive, the 7715Z ensures smooth operation even when handling multiple tasks simultaneously.

On the other hand, the Acer 7315 targets those who prioritize portability without compromising on performance. This model boasts a 15.4-inch display, making it lightweight and easier to carry. It also features an Intel Core 2 Duo processor but comes with slightly different configurations to accommodate various usage needs.

Both models come equipped with integrated graphics, making them suitable for casual gaming and media consumption. Additionally, the Acer 7715Z and 7315 include a DVD writer, allowing users to watch movies or burn data easily. Another essential feature is the full-sized keyboard that offers a comfortable typing experience, perfect for long sessions of work or gaming.

In terms of connectivity, both laptops provide ample options, including USB ports, an Ethernet port, and Bluetooth capabilities, ensuring users can connect with a variety of peripherals and networks. Furthermore, Acer has incorporated their proprietary technologies to enhance battery life and performance management, allowing users to maximize their productivity on the go.

The design aesthetic of these laptops is also commendable. The sleek casing and ergonomic layout not only contribute to a professional look but also enhance usability. Users can expect reliable customer service and support from Acer, ensuring peace of mind and assistance when needed.

In summary, the Acer 7715Z and 7315 models are well-rounded choices that cater to various user needs. Whether it’s for work, school, or leisure, these laptops offer versatility, performance, and a solid build, making them worthy contenders in the competitive laptop market.