Code

Beeps

POST Routine Description

 

 

 

 

 

 

 

8Ch

 

Initialize floppy controller

 

 

 

 

 

 

 

8Fh

 

Determine number of ATA drives (optional)

 

 

 

 

 

 

 

90h

 

Initialize hard-disk controllers

 

 

 

 

 

 

 

91h

 

Initialize local-bus hard-disk controllers

 

 

 

 

 

 

 

92h

 

Jump to UserPatch2

 

 

 

 

 

 

 

93h

 

Build MPTABLE for multi-processor boards

 

 

 

 

 

 

 

95h

 

Install CD ROM for boot

 

 

 

 

 

 

 

96h

 

Clear huge ES segment register

 

 

 

 

 

 

 

97h

 

Fixup Multi Processor table

 

 

 

 

 

 

 

98h

1-2

Search for option ROMs. One long, two short

 

 

 

 

beeps on checksum failure.

 

 

 

 

 

 

 

99h

 

Check for SMART drive (optional)

 

 

 

 

 

 

 

9Ah

 

Shadow option ROMs

 

 

 

 

 

 

 

9Ch

 

Set up Power Management

 

 

 

 

 

 

 

9Dh

 

Initialize security engine (optional)

 

 

 

 

 

 

 

9Eh

 

Enable hardware interrupts

 

 

 

 

 

 

 

9Fh

 

Determine number of ATA and SCSI drives

 

 

 

 

 

 

 

A0h

 

Set time of day

 

 

 

 

 

 

 

A2h

 

Check key lock

 

 

 

 

 

 

 

A4h

 

Initialize Typematic rate

 

 

 

 

 

 

 

A8h

 

Erase F2 prompt

 

 

 

 

 

 

 

AAh

 

Scan for F2 key stroke

 

 

 

 

 

 

 

ACh

 

Enter SETUP

 

 

 

 

 

 

 

AEh

 

Clear Boot flag

 

 

 

 

 

 

 

B0h

 

Check for errors

 

 

 

 

 

 

 

B2h

 

POST done- prepare to boot operating system

 

 

 

 

 

 

 

B4h

1

One short beep before boot

 

 

 

 

 

 

 

B5h

 

Terminate QuietBoot (optional)

 

 

 

 

 

 

 

B6h

 

Check password (optional)

 

 

 

 

 

 

 

B9h

 

Prepare Boot

 

 

 

 

 

 

 

BAh

 

Initialize DMI parameters

 

 

 

 

 

 

 

BBh

 

Initialize PnP Option ROMs

 

 

 

 

 

 

 

BCh

 

Clear parity checkers

 

 

 

 

 

 

 

BDh

 

Display MultiBoot menu

 

 

 

 

 

 

 

BEh

 

Clear screen (optional)

 

 

 

 

 

 

 

BFh

 

Check virus and backup reminders

 

 

 

 

 

 

 

C0h

 

Try to boot with INT 19

 

 

 

 

 

 

 

C1h

 

Initialize POST Error Manager (PEM)

 

 

 

 

 

 

 

C2h

 

Initialize error logging

 

 

 

 

 

 

 

C3h

 

Initialize error display function

 

 

 

 

 

 

 

C4h

 

Initialize system error handler

 

 

 

 

 

 

 

C5h

 

PnPnd dual CMOS (optional)

 

 

 

 

 

 

 

C6h

 

Initialize notebook docking (optional)

 

 

 

 

 

 

 

C7h

 

Initialize notebook docking late

 

 

 

 

 

 

 

C8h

 

Force check (optional)

 

 

 

 

 

 

 

C9h

 

Extended checksum (optional)

 

 

 

 

 

 

 

 

 

 

 

76

Chapter 4

Page 84
Image 84
Acer 2420 manual Code Beeps Post Routine Description

2420 specifications

The Acer 2420 is a versatile laptop that strikes a balance between performance and affordability, making it a popular choice for users ranging from students to professionals. This model is part of Acer’s Aspire series, known for its reliable build and innovative features.

One of the standout characteristics of the Acer 2420 is its design. The laptop features a sleek, lightweight chassis that is easy to carry, making it an excellent option for users who are often on the go. With a 14-inch display, it offers a compact size without compromising screen real estate, ensuring that users can enjoy decent visuals while working or streaming media.

In terms of performance, the Acer 2420 is powered by Intel’s Core i5 or AMD equivalent processors, providing robust computing capabilities that can handle everyday tasks with ease. Accompanied by 4GB or 8GB of RAM, the device multitasks efficiently, allowing users to run several applications simultaneously without glitches. Additionally, it typically comes with a 1TB HDD or SSD option, offering ample storage for files, documents, and multimedia.

The display quality of the Acer 2420 is commendable, featuring HD resolution that brings clarity and brightness to various content types, including videos and images. The laptop also incorporates Acer’s Color Intelligence technology, which dynamically adjusts the color and brightness based on the content being displayed, enhancing the overall viewing experience.

Technologically, the Acer 2420 is equipped with essential connectivity options such as USB 3.0 ports for speedy data transfer, HDMI output for external displays, and a card reader, catering to versatile connectivity needs. The laptop supports Wi-Fi and Bluetooth for seamless internet access and connectivity with other devices.

Battery life is another important aspect of the Acer 2420, with a capacity designed to last through a workday, minimizing the need for frequent recharges. This long-lasting battery, combined with energy-efficient components, makes the Acer 2420 an excellent companion for both work and leisure.

In conclusion, the Acer 2420 melds portability, solid performance, and practical features into an attractive package. For users seeking a dependable laptop that can keep up with daily tasks while also providing multimedia capabilities, the Acer 2420 is a commendable choice.