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IBM 600 Low and high base memory bytes define, Low High Expansion, High Byte Hex, Byte Hex 02F

Models: 600

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Bits 3–2These bits are reserved.

Bit 1 If set to 1, this bit indicates that a coprocessor is installed.

Bit 0 If set to 1, this bit indicates that physical diskette drive 0

 

 

 

is

installed.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Low

and

High

Base

Memory

Bytes

(Hex

015

 

and

Hex

 

016):

 

The

 

 

 

 

 

low and high base memory bytes define

the

 

amount

 

of

memory

below the 640-KB address

space.

 

 

 

 

 

 

 

 

 

 

 

 

 

The value in these bytes represents

the number of 1-KB blocks of

base memory. For example, hex 0280 indicates

640

KB. The

low

 

byte

is

hex

015;

the

high

byte

is

 

hex 016.

 

 

 

 

 

 

Low

and

High

Expansion

Memory

Bytes

(Hex

017

and

Hex

 

 

 

 

 

 

 

 

 

018):

The

low

and

high

expansion

memory

 

bytes

 

define

the amount

of

memory

above

the

1-MB

address

space.

 

 

 

 

 

 

 

 

The value in these bytes represents

the number of 1-KB blocks of

expansion

memory. For

example,

hex

0800

indicates

2048

KB. The

 

low byte is hex 017;

the high

byte

 

is

hex

018.

 

 

 

 

Reserved

Bytes

(Hex

01D–02D):

 

These

bytes are reserved.

 

 

 

Configuration Checksum Bytes (Hex 02E and Hex 02F):

 

 

The

 

 

 

 

 

 

configuration checksum bytes contain the checksum character

for

bytes

hex

010 through

hex

02D

 

of

the

64-byte

CMOS

RAM. The

high

byte

is

hex

02E;

the

low

 

byte

 

is

hex

02F.

 

 

 

 

 

Low

and

High

Usable

Memory

Bytes (Hex

030

 

and

Hex

 

031):

 

 

 

 

 

 

 

 

The low and high usable memory bytes

 

define

the

 

total

amount of

contiguous

memory

from

1

MB

to

20

MB.

 

 

 

 

 

 

 

 

 

 

 

The

hexadecimal

values

in

these

bytes

represent

the

number of

1-KB blocks of usable

memory. For

example,

hex

0800

is

equal

to

2048

 

KB. The

low

byte

is

hex

30;

the

high

byte

is

hex

31.

Date-Century

Byte

(Hex

032):

 

Bits

7

through

 

0

of

the

date-century

byte contain the binary-coded decimal value for the century. For information about reading and setting this IBMbyte, refer to the Personal System/2 and Personal Computer BIOS .Interface

Reserved Bytes (Hex 033–07F): These bytes are reserved.

System Board 2-27

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IBM 600 Low and high base memory bytes define, Low High Expansion, KB. Low byte is hex High Byte Hex 018, Byte Hex 02F
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600 specifications

The IBM 600 series is a notable line of enterprise-level servers that has garnered attention for its robust performance, advanced features, and scalability suitable for large organizations. Originally introduced as part of IBM's initiative to provide businesses with powerful computing solutions, the IBM 600 servers have evolved to meet the growing demands of modern data environments.

One of the main features of the IBM 600 series is its capability for high scalability. The architecture of these servers allows organizations to expand their systems as needed, making it easier to adapt to changing business requirements. With various configurations available, users can select the specifications that best fit their workload, ranging from small businesses to large enterprises running mission-critical applications.

In terms of processing power, the IBM 600 is equipped with advanced multi-core processors. This technology allows for better parallel processing capabilities, enabling the server to handle multiple tasks simultaneously. The incorporation of IBM's Power architecture enhances the overall performance and energy efficiency of the servers, making them a suitable choice for organizations that rely heavily on data-intensive applications.

The IBM 600 series also excels in storage and memory capabilities. Users can equip the servers with large amounts of RAM and employ various storage options, including SSDs and traditional hard drives. This flexibility helps ensure that the systems can manage substantial data volumes while providing fast access speeds, essential for data-driven operations.

Security is another critical aspect of the IBM 600 series. IBM has integrated advanced security features to protect sensitive data, including encryption technologies and options for secure boot processes. This implementation is crucial for organizations that must comply with regulatory standards while safeguarding their information from potential breaches.

Additionally, the IBM 600 supports a variety of operating systems, including AIX, Linux, and Windows Server. This versatility makes it easier for businesses to integrate their existing software with the IBM infrastructure. Connectivity features, including multiple networking options, provide enhanced integration capabilities into organizational IT ecosystems.

Overall, the IBM 600 series combines powerful processing capabilities, flexible scalability, advanced security features, and a broad range of supported operating systems. These characteristics make it a compelling choice for enterprises looking to optimize their computing infrastructures and drive digital transformation initiatives. IBM continues to support and innovate within this server line, maintaining its relevance in the ever-evolving technology landscape.