SurePOS 500 4846-XX5 Technical Reference

3.7EBDA Memory Addresses

The Extended BIOS Data Area (EBDA) starts at the segment pointed to by the contents of 40:0Eh.

Start Location

Length in bytes

Description

Comments

00h

1

Length of EBDA in KB

 

01h

32

Reserved

 

17h

1

Number of POST errors

not required

18h

5

POST error log

not required

22h

4

Mouse Driver Ptr

Int 74h

26h

1

Mouse flag byte 1

Int 74h

27h

1

Mouse flag byte 2

Int 74h

28h

8

Mouse data

Int 74h

30h

3d0h

Reserved

Reserved

3.8Memory Map

This section documents the default memory map. Note that add-in cards or changing CMOS Setup items may alter the memory map, particularly below 1 MB.

Memory Map with USB Legacy Support enabled (default)

Physical

 

Physical

Size

Description

Address Range

 

 

Address Range (Hex)

(Dec)

 

 

 

 

 

 

 

 

 

0-639 KB

 

00000-9FC00

512 KB

Conventional DOS memory (size may decrease if booted

 

via LAN)

 

 

 

 

639 KB

 

9FC00-9FFFF

1 KB

EBDA (Extended BIOS Data) moveable by Himem,

 

memory managers

 

 

 

 

640-767 KB

 

A0000-BFFFF

128 KB

Legacy Video Buffer

 

 

 

 

 

 

768-831 KB

 

C0000-CFFFF

64 KB

Video BIOS ROM (shadowed)

 

 

 

 

 

 

832-863 KB

 

D0000-D7FFF

32 KB

USB Legacy Support

 

 

 

 

 

 

864-867 KB

 

D8000-D8FFF

4 KB

Network ROM boot loader

 

 

 

 

 

 

868-895 KB

 

D9000-DFFFF

28 KB

Free for EMM386

 

 

 

 

 

 

896 KB-959KB

 

E0000-EFFFF

64 KB

Free for EMM386

 

 

 

 

 

 

960KB – 1MB

 

F00000-FFFFFF

64KB

System ROM BIOS

 

 

 

 

 

 

1- 16 MB

 

100000-FFFFFF

15 MB

PCI/ISA Space

 

 

 

 

 

 

16 MB – 4095.5

 

1000000-FFF7FFFF

4079.5

OS, PCI adapter memory decode, etc.

MB

 

MB

 

 

 

 

4095.5 MB - 4096

 

FFF80000-FFFFFFF

512 KB

System ROM BIOS (ISA Bus)

MB

 

 

 

 

 

 

Memory Map with USB Legacy support disabled:

 

 

Physical

Physical

Size

 

Description

Address Range

 

Address Range (Hex)

 

(Dec)

 

 

 

 

 

 

 

 

0-639 KB

00000-9FC00

512 KB

 

Conventional DOS memory (size may decrease if

 

booted via LAN)

 

 

 

 

 

639 KB

9FC00-9FFFF

1 KB

 

EBDA (Extended BIOS Data) moveable by Himem,

 

memory managers

 

 

 

 

 

640-767 KB

A0000-BFFFF

128 KB

 

Legacy Video Buffer

 

 

 

 

 

 

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IBM 500 manual Ebda Memory Addresses, Memory Map, Start Location Length in bytes Description Comments

500 specifications

The IBM 500 is a significant player in the world of enterprise solutions, particularly known for its robust capabilities in data processing and analytics. Designed to meet the evolving needs of businesses, the IBM 500 stands out due to its outstanding features that enhance performance, reliability, and scalability, making it a preferred choice for organizations of various sizes.

At the heart of the IBM 500 lies its powerful processing unit, which leverages IBM’s latest Power architecture. This architecture is renowned for its high throughput and efficient energy consumption, allowing businesses to run complex applications seamlessly. With multiple cores and threads, the IBM 500 can handle large volumes of data and execute extensive workloads concurrently, making it ideal for data-intensive operations.

One of the key features of the IBM 500 is its advanced analytics capability. It incorporates IBM Watson technology, which enables organizations to utilize artificial intelligence and machine learning to derive actionable insights from their data. This functionality is crucial for businesses looking to enhance decision-making processes and remain competitive in the market.

The IBM 500 also boasts robust security features. With built-in encryption, compliance monitoring, and advanced user access controls, organizations can safeguard their sensitive data against unauthorized access and potential breaches. This is increasingly important in today’s landscape, where data privacy regulations are becoming more stringent.

In terms of connectivity, the IBM 500 supports a wide range of connectivity options, including high-speed networking and integration with cloud services. This flexibility allows businesses to link their on-premise environments with cloud infrastructures, facilitating hybrid cloud strategies.

Additionally, the IBM 500 is designed with high availability in mind. It includes redundant components and support for failover systems, ensuring that businesses can maintain operations without interruption. This reliability is critical for organizations that cannot afford downtime, such as those in finance, healthcare, or e-commerce.

IBM’s commitment to sustainability is also reflected in the design of the IBM 500. The system is optimized for lower energy consumption, contributing to organizations’ goals for reducing their carbon footprint while maintaining high performance.

Overall, the IBM 500 combines powerful processing, advanced analytics, robust security, and reliable performance in a single solution. It is a testament to IBM’s dedication to providing cutting-edge technology that meets the needs of modern enterprises, while also allowing them to leverage innovation for sustainable growth. As businesses continue to adapt to digital transformations, the IBM 500 serves as a critical ally in navigating these changes effectively.