Code

Beeps

POST Routine Description

 

 

 

8Ah

 

Initialize Extended BIOS Data Area

 

 

 

8Bh

 

Test and initialize PS/2 mouse

 

 

 

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

 

 

 

74

Chapter 4

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Acer 4740G, 4740ZG manual Code Beeps Post Routine Description

4740, 4740G, 4740Z, 4740ZG specifications

The Acer 4740 series, which includes models like the 4740ZG, 4740Z, 4740G, and 4740, presents a versatile range of laptops that cater to both casual users and professionals seeking reliable performance. With an emphasis on a blend of functionality and affordability, these devices have garnered attention since their release.

One of the standout features of the Acer 4740 series is its sleek, compact design. The aesthetics appeal to a wide audience, making it suitable for various environments, whether in the office, classroom, or home. The laptop's lightweight build enhances portability, allowing users to carry it effortlessly.

The display of the 4740 models is another critical aspect. Featuring a 14-inch HD screen, these laptops provide vibrant colors and sharp visuals, suitable for multimedia consumption, presentations, or simple web browsing. The LED backlighting contributes to energy efficiency while enhancing overall viewing experiences.

In terms of performance, the Acer 4740 series is powered by Intel processors, which differ across models. The 4740ZG typically includes the more powerful graphics capabilities than its Z and basic G counterparts, catering to users who might engage in light gaming or graphic-intensive tasks. The incorporation of dedicated NVIDIA GeForce graphics in the 4740ZG lends added versatility for users requiring enhanced visual performance.

Memory and storage options are abundant, with configurations often ranging up to 4GB of RAM and various hard drive capacities. This adaptability allows users to choose a setup that best fits their computing needs, ensuring smooth multitasking and sufficient data storage.

Connectivity is robust in the 4740 series, incorporating multiple USB ports, HDMI outputs, and VGA options to facilitate a seamless connection to external devices. Additionally, Wi-Fi and Bluetooth capabilities keep users connected in a myriad of environments, further enhancing the device's usability.

Battery life is commendable, allowing for several hours of usage on a single charge, which is critical for users on the go. The Acer 4740 series strikes an admirable balance between performance and battery efficiency.

In conclusion, the Acer 4740ZG, 4740Z, 4740G, and 4740 models exemplify a thoughtful compilation of features conducive to diverse computing needs, pairing reliable performance with practical design. Their comprehensive characteristics make them an excellent choice for users seeking a dependable laptop experience.