Chapter 2. System board features

Network connection

Some PC 300GL models are equipped with an Ethernet adapter that supports the Wake on LA

Features of the optional Ethernet adapter are:

Ÿ

Operates in shared 10BASE-T or 100BASE-TX environment

Ÿ

Transmits

and

receives

data at 10 Mbps or

100 Mbps

Ÿ

RJ-45 connector for LAN attachment

 

Ÿ

Operates

in

symmetrical

multiprocessing (SMP)

environments

Ÿ

Wake on

LAN

support

 

 

ŸRemote Program Load (RPL) and Dynamic Host Configuration Protocol (DHCP) support

Features of the optional token ring adapter are:

Ÿ

Transmits

and

receives data

at

4

Mbps or 16 Mbps

Ÿ

RJ-45 and D-shell connectors

for

LAN

attachment

Ÿ

Wake on

LAN

support

 

 

 

ŸRemote Program Load (RPL) and Dynamic Host Configuration Protocol (DHCP) support

Real-time

clock

and

CMOS

 

 

 

 

 

 

 

The

real-time clock is

a low-power clock

that provides a time-of-day clock and a calenda

settings

are

maintained

by an

external

battery

source

of 3

V DC.

The

system uses

242

bytes

of memory

to

store

complementary

metal-oxide semiconductor (

memory. Moving

a jumper

on the

system board

erases CMOS

memory.

 

To locate the battery, see “System board, types 6268, 6278, and 6288” on page 13.

Flash EEPROM

The

system board uses a 2 MB

flash electrically erasable,

programmable, read-only memor

to

store

the basic input/output

system (BIOS), video BIOS,

IBM logo, Configuration/Setup

and

Play

data.

 

 

If necessary, the EEPROM can be easily updated using a stand-alone utility program tha 3.5-inch diskette.

Expansion adapters

Each PCI-expansion connector is a 32–bit slot. PCI-expansion connectors support the 32–bit

local-bus signalling environment that is PCIdefinedLocal inBus Specification. 2.2

The PC 300GL has four PCI slots to support the addition of adapters. For information on adapters, PCsee300GL User Guide. For information on the connector pin assignments, see “PCI connectors” on page 29.

12 Technical Information Manual

Page 20
Image 20
IBM 6278, 6288, 6268 manual Network connection, Flash Eeprom, Expansion adapters, Clock, Attachment

6278, 6268, 6288 specifications

The IBM 6278, 6288, and 6268 are part of IBM's extensive lineup of mid-range computers, specifically tailored for business environments in the late 1980s and early 1990s. These systems were designed to handle substantial data processing tasks, facilitating efficient business operations with robust performance and reliability.

The IBM 6278 was notable for its high-performance capabilities, making it suitable for a variety of applications ranging from transaction processing to complex computations. One of the main features of the 6278 was its multiprocessing capability, which allowed it to run multiple tasks concurrently. This was achieved through a combination of advanced hardware and software that optimized performance and resource allocation.

Similarly, the IBM 6288 was recognized for its versatility and scalability. This system incorporated enhanced memory management and was capable of handling larger workloads than its predecessors. The 6288 was designed with user-friendly interfaces and supported various input/output devices, making it easier for organizations to integrate into existing IT infrastructures. Additionally, it provided improved connectivity options, essential for modern networking needs at the time.

The IBM 6268, on the other hand, offered a balance between cost and performance, appealing to smaller businesses or those with less intensive data processing requirements. Despite being less powerful than the 6278 and 6288, the 6268 still managed to include essential features such as reliable data storage, effective processing speed, and compatibility with IBM's extensive software ecosystem.

All three models utilized IBM's proprietary operating systems, which were well-known for their robustness and security features. They were built with technologies such as error detection and correction, ensuring the integrity of data processing tasks. The architecture of these systems also allowed for easy upgrades, enabling businesses to expand their capabilities without a complete overhaul of their IT infrastructure.

In summary, the IBM 6278, 6288, and 6268 represented a significant advancement in mid-range computing technology during their era. Their main features encompassed multiprocessing, scalability, and user-friendly interfaces, making them valuable assets for businesses seeking reliable and efficient computing solutions. These systems laid the groundwork for future innovations in business computing, and despite their age, they remain a significant part of IBM's legacy in the computing industry.