Code

Beeps

POST Routine Description

 

 

 

46h

2-1-2-3

Check ROM copyright notice

 

 

 

48h

 

Check video configuration against CMOS

 

 

 

49h

 

Initialize PCI bus and devices

 

 

 

4Ah

 

Initialize all video adapters in system

 

 

 

4Bh

 

QuietBoot start (optional)

 

 

 

4Ch

 

Shadow video BIOS ROM

 

 

 

4Eh

 

Display BIOS copyright notice

 

 

 

50h

 

Display CPU type and speed

 

 

 

51h

 

Initialize EISA board

 

 

 

52h

 

Test keyboard

 

 

 

54h

 

Set key click if enabled

 

 

 

58h

2-2-3-1

Test for unexpected interrupts

 

 

 

59h

 

Initialize POST display service

 

 

 

5Ah

 

Display prompt “Press F2 to enter SETUP”

 

 

 

5Bh

 

Disable CPU cache

 

 

 

5Ch

 

Test RAM between 512 and 640 KB

 

 

 

60h

 

Test extended memory

 

 

 

62h

 

Test extended memory address lines

 

 

 

64h

 

Jump to User Patch1

 

 

 

66h

 

Configure advanced cache registers

 

 

 

67h

 

Initialize Multi Processor APIC

 

 

 

68h

 

Enable external and CPU caches

 

 

 

69h

 

Setup System Management Mode (SMM) area

 

 

 

6Ah

 

Display external L2 cache size

 

 

 

6Bh

 

Load custom defaults (optional)

 

 

 

6Ch

 

Display shadow-area message

 

 

 

6Eh

 

Display possible high address for UMB recovery

 

 

 

70h

 

Display error messages

 

 

 

72h

 

Check for configuration errors

 

 

 

76h

 

Check for keyboard errors

 

 

 

7Ch

 

Set up hardware interrupt vectors

 

 

 

7Eh

 

Initialize coprocessor if present

 

 

 

80h

 

Disable onboard Super I/O ports and IRQs

 

 

 

81h

 

Late POST device initialization

 

 

 

82h

 

Detect and install external RS232 ports

 

 

 

83h

 

Configure non-MCD IDE controllers

 

 

 

84h

 

Detect and install external parallel ports

 

 

 

85h

 

Initialize PC-compatible PnP ISA devices

 

 

 

86h

 

Re-initialize onboard I/O ports

 

 

 

87h

 

Configure Motherboard Configurable Devices (optional)

 

 

 

88h

 

Initialize BIOS Data Area

 

 

 

89h

 

Enable Non-Maskable Interrupts (NMIs)

 

 

 

Chapter 4

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Acer 4315 manual Code Beeps Post Routine Description

4315 specifications

The Acer 4315 and Acer 4715Z are compact and reliable laptops from Acer's lineup, known for their blend of performance and affordability targeted at entry-level users. These models stand out due to their practical features and solid build quality, making them suitable for both educational and basic professional tasks.

The Acer 4315 is equipped with a 15.4-inch display that offers a resolution of 1280 x 800 pixels, providing clear visuals and decent color reproduction for everyday usage. It features a robust Intel Celeron processor, which ensures that it efficiently handles common computing tasks, including web browsing, word processing, and media consumption. This model often comes with a variety of RAM options, typically ranging from 512MB to 2GB, allowing users to choose according to their multitasking needs.

On the other hand, the Acer 4715Z is a step up in terms of specifications. It sports a larger 17-inch screen, which enhances the viewing experience for movies and presentations. Powered by either a Celeron or entry-level Pentium processor, it delivers commendable performance for users who need a bit more muscle without venturing into high-end territory. The laptop also supports more RAM options, often up to 4GB, which translates to better multitasking capabilities and smoother operation of applications.

Both models come with integrated Intel graphics, sufficient for casual gaming and basic graphic tasks. The storage options generally include a 80GB to 160GB hard drive, providing ample space for files, documents, and media. They also feature multiple connectivity ports, such as USB, VGA, and Ethernet ports, alongside an integrated webcam and microphone, catering to users with a need for video conferencing and online communication.

The design of both laptops is straightforward and ergonomic, emphasizing practicality. Their battery life is adequate for short to medium usage, appealing to students and professionals on the go. Overall, the Acer 4315 and 4715Z serve as excellent options for those seeking cost-effective and dependable laptops that can handle the fundamental demands of daily computing without breaking the bank.