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)

 

 

 

 

 

 

 

 

 

 

 

83

Chapter 4

Page 92
Image 92
Acer 1520 manual Code Beeps Post Routine Description

1520 specifications

The Acer 1520 is a noteworthy addition to the lineup of mid-range laptops, designed primarily for users seeking reliable performance for everyday computing tasks. This laptop strikes a balance between performance, portability, and affordability, making it an excellent choice for students, professionals, and casual users alike.

One of the standout features of the Acer 1520 is its display. With a 15.6-inch screen, it boasts a Full HD resolution that delivers sharp and vibrant visuals. The anti-glare coating further enhances the viewing experience by reducing reflections, making it suitable for various lighting conditions. Whether you're working on spreadsheets, watching movies, or browsing the web, the display offers an immersive experience.

Under the hood, the Acer 1520 is powered by the latest Intel Core processors, providing ample power for multitasking and demanding applications. Coupled with up to 16GB of RAM, users can run multiple applications smoothly without experiencing lag. This makes it ideal for users who require a machine that can handle everything from basic tasks to more resource-intensive operations like photo and video editing.

Storage options in the Acer 1520 include both traditional HDDs and faster SSDs. This flexibility allows users to choose between larger storage capacities at a lower cost or faster performance with reduced load times. Furthermore, the laptop supports additional storage options through USB ports, including USB 3.0, which enables quick file transfers.

The design of the Acer 1520 is user-friendly, featuring a chiclet keyboard that enhances typing comfort and precision. The touchpad is responsive and supports multi-touch gestures, making navigation intuitive. Additionally, the ergonomic design contributes to a comfortable user experience over extended periods.

Connectivity is another strong point of the Acer 1520. It comes with a variety of ports, including HDMI, USB-C, and an audio jack, allowing for easy connection to external devices like monitors, projectors, and audio systems. The inclusion of Wi-Fi 6 technology ensures that users enjoy faster internet speeds and a more stable connection, which is particularly beneficial for streaming and online gaming.

In summary, the Acer 1520 is a versatile laptop that delivers solid performance, a vibrant display, and a range of connectivity options, making it a great option for anyone in search of a dependable computing device for daily use. Its combination of features, performance, and value positions it well in the competitive laptop market, catering to a diverse set of requirements.