Code

Beeps

POST Routine Description

 

 

 

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)

 

 

 

D2h

 

Unknown interrupt

 

 

 

Code

Beeps

For Boot Block in Flash ROM

 

 

 

E0h

 

Initialize the chipset

 

 

 

E1h

 

Initialize the bridge

 

 

 

E2h

 

Initialize the CPU

 

 

 

E3h

 

Initialize system timer

 

 

 

E4h

 

Initialize system I/O

 

 

 

E5h

 

Check force recovery boot

 

 

 

E6h

 

Checksum BIOS ROM

 

 

 

E7h

 

Go to BIOS

 

 

 

E8h

 

Set Huge Segment

 

 

 

E9h

 

Initialize Multi Processor

 

 

 

EAh

 

Initialize OEM special code

 

 

 

EBh

 

Initialize PIC and DMA

 

 

 

ECh

 

Initialize Memory type

 

 

 

EDh

 

Initialize Memory size

 

 

 

EEh

 

Shadow Boot Block

 

 

 

EFh

 

System memory test

 

 

 

F0h

 

Initialize interrupt vectors

 

 

 

F1h

 

Initialize Run Time Clock

 

 

 

F2h

 

Initialize video

 

 

 

F3h

 

Initialize System Management Mode

 

 

 

F4h

1

Output one beep before boot

 

 

 

F5h

 

Boot to Mini DOS

 

 

 

F6h

 

Clear Huge Segment

 

 

 

F7h

 

Boot to Full DOS

 

 

 

*If the BIOS detects error 2C, 2E, or 30 (base 512K RAM error), it displays an additional word-bitmap (xxxx) indicating the address line or bits that failed. For example, 2C 0002 means address line 1 (bit one set) has failed. 2E 1020 means data bits 12 and 5 (bits 12 and 5 set) have failed in the lower 16 bits. Note that error 30 cannot occur on 386SX systems because they have a 16 rather than 32-bit bus. The BIOS also sends the bitmap to the port-80 LED display. It first displays the check point code, followed by a delay, the high-order byte, another delay, and then the low-order byte of the error. It repeats this sequence continuously.

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Chapter 4

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Image 149
Acer 5515 manual Code Beeps For Boot Block in Flash ROM

5515 specifications

The Acer 5515 is a versatile and budget-friendly laptop that caters to the needs of students and casual users. It embodies a blend of functionality and portability, making it an attractive option for those seeking a reliable computing companion without breaking the bank.

The laptop features a 15.6-inch display, which delivers clear and vibrant visuals ideal for both work and entertainment. With a resolution of 1366x768 pixels, the screen provides adequate brightness and color reproduction, making it suitable for watching videos and browsing the web. The device's compact form factor ensures that it remains lightweight and easy to carry, making it an excellent choice for students who are always on the go.

Under the hood, the Acer 5515 is powered by an AMD processor, which typically offers a good balance between performance and energy efficiency. This allows for smooth multitasking and efficient handling of everyday tasks such as word processing, web browsing, and media playback. Coupled with ample RAM, the laptop ensures that users can run multiple applications simultaneously without experiencing significant slowdowns.

Storage options on the Acer 5515 often include traditional HDDs with substantial capacity, providing plenty of space for documents, photos, and multimedia files. Some configurations may also offer SSD options, which significantly enhance the system's responsiveness and boot times.

When it comes to connectivity, the Acer 5515 is equipped with essential ports such as USB 3.0, HDMI, and an SD card reader, allowing users to connect various devices and peripherals easily. Additionally, Wi-Fi and Bluetooth support enable seamless wireless connectivity, making it possible to connect to the internet and other devices without the hassle of cables.

Battery life is another commendable feature of the Acer 5515, often providing hours of usage on a single charge. This makes the laptop a reliable choice for students attending classes or professionals working remotely, as it minimizes the need for frequent recharging.

In conclusion, the Acer 5515 is a solid entry-level laptop that offers a blend of performance, portability, and essential features, making it an excellent choice for budget-conscious users seeking a dependable computing experience. Its robust design, coupled with user-friendly technologies, positions it as a suitable option for a variety of everyday computing tasks.