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MSB900/L Detailed Technical Manual V1.0

5.6.4.1.Standard BIOS ROM

Device:

FWH

 

 

 

 

Map:

E0000 - FFFFFh

Core BIOS 128k

 

C0000 - C7FFFh

VGA BIOS 32k

 

CC000 - CFFFFh

FREE

5.6.5.BIOS CMOS Setup

If wrong setups are memorized in the CMOS-RAM, the default values will be loaded after resetting the RTC/CMOS-RAM by de-soldering the battery.

If the battery is down, it is always possible to start the system with the default values from the BIOS.

5.7.CMOS RAM Map

Systems based on the industry-standard specification include a battery backed Real Time Clock chip. This clock contains at least 64Bytes of non-volatile RAM. The system BIOS uses this area to store information including system configuration and initialization parameters, system diagnostics, and the time and date. This information remains intact even when the system is powered down.

The BIOS supports 128Bytes of CMOS RAM. This information is accessible through I/O ports 70h and 71h. CMOS RAM can be divided into several segments:

￿Locations 00h - 0Fh contain the real time clock (RTC) and status information

￿Locations 10h - 2Fh contain system configuration data

￿Locations 30h - 3Fh contain system BIOS-specific configuration data as well as chipset-specific in- formation

￿Locations 40h - 7Fh contain chipset-specific information as well as power management configuration parameters

The following table provides a summary of how these areas may be further divided.

Beginning

Ending

Checksum

Description

 

 

 

 

00h

0Fh

No

RTC and Checksum

10h

2Dh

Yes

System Configuration

2Eh

2Fh

No

Checksum Value of 10h - 2Dh

30h

33h

No

Standard CMOS

34h

3Fh

No

Standard CMOS - SystemSoft Reserved

40h

5Bh

Yes

Extended CMOS - Chipset Specific

5Ch

5Dh

No

Checksum Value of 40h - 5Bh

5Eh

6Eh

No

Extended CMOS - Chipset Specific

6Fh

7Dh

Yes

Extended CMOS - Power Management

7Eh

7Fh

No

Checksum Value of 6Fh - 7Dh

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Compaq MSB900L user manual Cmos RAM Map, Bios Cmos Setup, Device

MSB900, MSB900L specifications

The Compaq MSB900 and MSB900L are noteworthy entries in the realm of personal computing, particularly for their cutting-edge features and innovative technologies that defined their era. Positioned as versatile desktop solutions, both models have garnered attention for their robust performance and user-friendly design.

The Compaq MSB900 is equipped with a powerful processor that enhances multitasking efficiency. Its architecture supports a range of demanding applications, making it suitable for both professional and everyday use. Users can expect a seamless experience whether working on complex spreadsheets or engaging in casual gaming.

In terms of memory, the MSB900 boasts expandable RAM options, allowing users to enhance their system's capabilities as needed. The availability of multiple RAM slots provides flexibility for upgrades, ensuring the system can keep pace with future software requirements. Storage solutions in the MSB900 include high-speed hard drives, which contribute to fast boot times and robust data retrieval.

The MSB900L variant steps up the performance with additional features tailored for power users. It incorporates advanced graphics capabilities, offering superior visual experiences for gaming and multimedia applications. The dedicated graphics card provides a substantial boost in rendering performance, making it a worthy choice for graphic designers and video editors.

One of the standout characteristics of the MSB900 and MSB900L is their commitment to connectivity. Both models come equipped with a wide array of ports, ensuring compatibility with various peripherals. This includes USB ports for modern devices, Ethernet ports for wired networking, and legacy connections for older technology, catering to a diverse user base.

Energy efficiency is another key feature of these models. Designed with power-saving technologies, the Compaq MSB900 and MSB900L aim to reduce energy consumption without compromising performance. This focus not only helps to lower operating costs but also aligns with growing consumer preferences for environmentally conscious products.

In summary, the Compaq MSB900 and MSB900L offer a compelling combination of performance, expandability, and connectivity. Their innovative features and user-friendly design make them suitable for a wide range of users, from casual consumers to professional power users. As a testament to Compaq’s legacy, these models continue to be regarded as reliable choices in the personal computing landscape.