Appendix A.

Connector

pin

 

assignments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure

22

(Page

3

of

3).

PCI connector pin assignments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

 

Signal

 

 

 

 

 

 

 

I/O

 

Pin

 

Signal

 

 

 

 

 

 

I/O

 

 

 

 

 

 

 

 

 

 

 

A45

 

Address/Data

14

I/O

 

B45

 

Address/Data

14

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A46

 

Ground

 

 

 

 

NA

 

B46

 

Ground

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

A47

 

Address/Data

12

I/O

 

B47

 

Address/Data

12

I/O

 

 

 

 

 

 

 

 

 

 

 

A48

 

Address/Data

10

I/O

 

B48

 

Address/Data

10

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A49

 

Ground

 

 

 

 

NA

 

B49

 

Ground

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A50

 

Key

 

 

 

 

 

 

 

NA

 

B50

 

Key

 

 

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A51

 

Key

 

 

 

 

 

 

 

NA

 

B51

 

Key

 

 

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

A52

 

Address/Data

8

I/O

 

B52

 

Address/Data

8

I/O

 

 

 

 

 

 

 

 

 

 

 

A53

 

Address/Data

7

I/O

 

B53

 

Address/Data

7

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A54

 

+3.3

V

DC

 

NA

 

B54

 

+3.3

V

DC

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

A55

 

Address/Data

5

I/O

 

B55

 

Address/Data

5

I/O

 

 

 

 

 

 

 

 

 

 

 

A56

 

Address/Data

3

I/O

 

B56

 

Address/Data

3

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A57

 

Ground

 

 

 

 

NA

 

B57

 

Ground

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

A58

 

Address/Data

1

I/O

 

B58

 

Address/Data

1

I/O

 

 

 

 

 

 

 

 

 

A59

 

+5 V DC (I/O)

NA

 

B59

 

+5 V DC (I/O)

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A60

 

ACK64#

 

 

 

 

I/O

 

B60

 

ACK64#

 

 

 

 

 

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A61

 

+5

V

DC

 

 

NA

 

B61

 

+5

V

DC

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

A62

 

+5

V

DC

 

 

NA

 

B62

 

+5

V

DC

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IDE connectors

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

40

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

 

 

39

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure

23

(Page

1

of

2).

IDE connector pin assignments

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin

 

Signal

 

 

 

 

 

 

 

I/O

 

Pin

 

Signal

 

 

 

 

 

 

I/O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

RESET

 

 

 

 

 

 

 

O

 

21

 

NC

 

 

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

Ground

 

 

 

 

NA

 

22

 

Ground

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

Data

bus

bit

7

I/O

 

23

 

I/O

write

 

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

Data

bus

bit

8

I/O

 

24

 

NC

 

 

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

Data

bus

bit

6

I/O

 

25

 

 

I/O

read

 

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

Data

bus

bit

9

I/O

 

26

 

 

Ground

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

Data

bus

bit

5

I/O

 

27

 

 

I/O

channel

ready

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

Data

bus

bit

10

I/O

 

28

 

 

ALE

 

 

 

 

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

9

 

Data

bus

bit

4

I/O

 

29

 

 

NC

 

 

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

 

Data

bus

bit

11

I/O

 

30

 

 

Ground

 

 

 

 

NA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

11

 

Data

bus

bit

3

I/O

 

31

 

IRQ

 

 

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

 

Data

bus

bit

12

I/O

 

32

 

CS16#

 

 

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13

 

Data

bus

bit

2

I/O

 

33

 

SA1

 

 

 

 

 

 

O

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

Data

bus

bit

13

I/O

 

34

 

PDIAG#

 

 

 

 

 

I

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Appendix A. Connector pin assignments31

Page 39
Image 39
IBM 6288, 6268, 6278 manual IDE connectors, IDE connector pin assignments

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.