Checkpoint

 

Description

 

 

 

 

 

 

 

23h

1.

Check validity of RTC value:

 

 

 

 

e.g. a value of 5Ah is an invalid value for RTC minute.

 

 

 

2.

Load CMOS settings into BIOS stack. If CMOS checksum fails, use default value

 

 

 

 

instead.

 

 

 

3.

Prepare BIOS resource map for PCI & PnP use. If ESCD is valid, take into

 

 

 

 

consideration of the ESCD’s legacy information.

 

 

 

4.

Onboard clock generator initialization. Disable respective clock resource to empty PCI

 

 

 

 

& DIMM slots.

 

 

 

5.

Early PCI initialization

 

 

 

 

-Enumerate PCI bus number

 

 

 

 

-Assign memory & I/O resource

 

 

 

 

-Search for a valid VGA device and VGA BIOS, and put it into C000:0

 

 

 

 

 

 

24h

Reserved

 

 

 

 

 

 

25h

Reserved

 

 

 

 

 

 

26h

Reserved

 

 

 

 

 

 

27h

Initialize INT 09 buffer

 

 

 

 

 

 

28h

Reserved

 

 

 

 

 

 

 

29h

1.

Program CPU internal MTRR (P6 & PII) for 0-640K memory address.

 

 

 

2.

Initialize the APIC for Pentium class CPU.

 

 

 

3.

Program early chipset according to CMOS setup. Example: onboard IDE controller.

 

 

 

4.

Measure CPU speed.

 

 

 

5.

Invoke video BIOS.

 

 

 

 

 

 

2Ah

Reserved

 

 

 

 

 

 

2Bh

Reserved

 

 

 

 

 

 

2Ch

Reserved

 

 

 

 

 

 

 

2Dh

1.

Initialize multi-language

 

 

 

2.

Put information on screen display, including Award title, CPU type, CPU speed...

 

 

 

 

 

 

2Eh

Reserved

 

 

 

 

 

 

2Fh

Reserved

 

 

 

 

 

 

30h

Reserved

 

 

 

 

 

 

31h

Reserved

 

 

 

 

 

 

32h

Reserved

 

 

 

 

 

 

33h

Reset keyboard except Winbond 977 series Super I/O chips.

 

 

 

 

 

 

34h

Reserved

 

 

 

 

 

 

35h

Reserved

 

 

 

 

 

 

36h

Reserved

 

 

 

 

 

 

37h

Reserved

 

 

 

 

 

 

38h

Reserved

 

 

 

 

 

 

39h

Reserved

 

 

 

 

 

 

3Ah

Reserved

 

 

 

 

 

 

3Bh

Reserved

 

 

 

 

 

 

3Ch

Test 8254.

 

 

 

 

 

 

3Dh

Reserved

 

 

 

 

 

 

3Eh

Test 8259 interrupt mask bits for channel 1

 

 

 

 

 

 

3Fh

Reserved

 

 

 

 

 

 

40h

Test 8259 interrupt mask bits for channel 2.

 

 

 

 

 

 

41h

Reserved

 

 

 

 

 

 

42h

Reserved

 

 

 

 

 

 

 

 

 

 

 

65

Chapter 4

Page 71
Image 71
Acer 3300S manual Checkpoint Description

3300S specifications

The Acer 3300S is a well-regarded laptop that has garnered attention for its distinctive blend of functionality and performance. Designed for everyday users who require reliable computing power, the 3300S is an ideal choice for students, professionals, and casual users alike.

At the heart of the Acer 3300S is its robust processing capability, featuring a powerful multi-core processor which ensures smooth multitasking and efficient performance. This laptop is equipped with ample RAM, enabling users to run demanding applications seamlessly. Whether for productivity tasks, like word processing and spreadsheets, or for light gaming and multimedia streaming, the 3300S delivers reliable performance.

One of the standout features of the Acer 3300S is its display. The device comes with a high-definition screen that provides vibrant colors and sharp images, making it perfect for watching videos or engaging in graphic design work. The anti-glare technology also ensures a comfortable viewing experience, even in brightly lit environments, reducing eye strain during long hours of usage.

Acer has emphasized connectivity in the 3300S, which is equipped with multiple USB ports, HDMI output, and a card reader. This diverse range of connectivity options allows users to effortlessly connect various peripherals and external devices, enhancing the overall productivity of the laptop. Additionally, built-in Wi-Fi and Bluetooth enable seamless wireless connections, making it easy to stay connected to the internet and other devices.

Battery life is also a key characteristic of the Acer 3300S, providing long-lasting performance that can last throughout the day on a single charge. This feature is especially useful for users who are frequently on the move and require a reliable device that can keep up with their busy lifestyles.

In terms of design, the Acer 3300S boasts a sleek and modern look. Its lightweight construction makes it portable, while the durable materials used in its build ensure that the laptop can withstand the rigors of daily use. The comfortable keyboard and responsive touchpad enhance usability, providing a pleasant typing and navigation experience.

In summary, the Acer 3300S combines performance, connectivity, and portability in a stylish package. With its powerful processor, vibrant display, and long battery life, it stands out as a versatile laptop built to meet the needs of a diverse range of users. As such, the 3300S continues to be a popular choice for those seeking a reliable and efficient computing solution.