Appendix

A.

Connector

pin

assignments

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure

20

(Page

2

of 3). System memory connector pin input/output

 

 

 

 

 

 

 

 

 

 

 

Pin

 

 

Signal

Name

 

I/O

Pin

Signal Name

I/O

 

 

 

 

 

 

 

 

 

 

12

 

 

GND

 

 

N/A

96

GND

N/A

 

 

 

 

 

 

 

 

 

 

13

 

 

MD9

 

 

I/O

97

MD41

I/O

 

 

 

 

 

 

 

 

 

 

14

 

 

MD10

 

 

I/O

98

MD42

I/O

 

 

 

 

 

 

 

 

 

 

15

 

 

MD11

 

 

I/O

99

MD43

I/O

 

 

 

 

 

 

 

 

 

 

16

 

 

MD12

 

 

I/O

100

MD44

I/O

 

 

 

 

 

 

 

 

 

 

17

 

 

MD13

 

 

I/O

101

MD45

I/O

 

 

 

 

 

 

 

 

 

 

18

 

 

VDD

 

 

N/A

102

VDD

N/A

 

 

 

 

 

 

 

 

 

 

19

 

 

MD14

 

 

I/O

103

MD46

I/O

 

 

 

 

 

 

 

 

 

 

20

 

 

MD15

 

 

I/O

104

MD47

I/O

 

 

 

 

 

 

 

 

 

 

21

 

 

NC

 

 

I/O

105

NC

I/O

 

 

 

 

 

 

 

 

 

 

22

 

 

NC

 

 

I/O

106

NC

I/O

 

 

 

 

 

 

 

 

 

 

23

 

 

GND

 

 

I/O

107

GND

N/A

 

 

 

 

 

 

 

 

 

 

24

 

 

NC

 

 

N/A

108

NC

N/A

 

 

 

 

 

 

 

 

 

 

25

 

 

NC

 

 

N/A

109

NC

N/A

 

 

 

 

 

 

 

 

 

 

26

 

 

VDD

 

 

N/A

110

VDD

N/A

 

 

 

 

 

 

 

 

 

 

27

 

 

WE#

 

 

I

111

CAS#

N/A

 

 

 

 

 

 

 

 

 

 

28

 

 

DQMB0#

 

 

I

112

DQMB4#

I

 

 

 

 

 

 

 

 

 

29

 

 

DQMB1#

 

I

113

DQMB4#

I

 

 

 

 

 

 

 

 

 

 

30

 

 

S0#

 

 

I

114

S1#

I

 

 

 

 

 

 

 

 

 

 

31

 

 

OE0#

 

 

i

115

RAS#

N/A

 

 

 

 

 

 

 

 

 

 

32

 

 

GND

 

 

N/A

116

GND

N/A

 

 

 

 

 

 

 

 

 

 

33

 

 

A0

 

 

I

117

A1

I

 

 

 

 

 

 

 

 

 

 

34

 

 

A2

 

 

I

118

A3

I

 

 

 

 

 

 

 

 

 

 

35

 

 

A4

 

 

I

119

A5

I

 

 

 

 

 

 

 

 

 

 

36

 

 

A6

 

 

I

120

A7

I

 

 

 

 

 

 

 

 

 

 

37

 

 

A8

 

 

I

121

A9

I

 

 

 

 

 

 

 

 

 

 

38

 

 

A10/AP

 

 

I

122

A11

I

 

 

 

 

 

 

 

 

 

 

39

 

 

NC

 

 

BA1

123

NC

A11

 

 

 

 

 

 

 

 

 

 

40

 

 

VDD

 

 

N/A

124

VDD

N/A

 

 

 

 

 

 

 

 

 

 

41

 

 

NC

 

 

N/A

125

CK1

N/A

 

 

 

 

 

 

 

 

 

 

42

 

 

CK0

 

 

N/A

126

A14

O

 

 

 

 

 

 

 

 

 

 

43

 

 

GND

 

 

N/A

127

GND

N/A

 

 

 

 

 

 

 

 

 

 

44

 

 

OE2#

 

 

I

128

CKE0

N/A

 

 

 

 

 

 

 

 

 

 

45

 

 

S2#

 

 

I

129

S3#

I

 

 

 

 

 

 

 

 

 

46

 

 

DQMB2#

 

I

130

DQMB6#

I

 

 

 

 

 

 

 

 

 

47

 

 

DQMB3#

 

I

131

DQMB7#

I

 

 

 

 

 

 

 

 

 

 

48

 

 

WE2#

 

 

I

132

A15

I

 

 

 

 

 

 

 

 

 

 

49

 

 

VDD

 

 

N/A

133

VDD

N/A

 

 

 

 

 

 

 

 

 

 

50

 

 

NC

 

 

N/A

134

NC

N/A

 

 

 

 

 

 

 

 

 

 

51

 

 

NC

 

 

N/A

135

NC

N/A

 

 

 

 

 

 

 

 

 

 

52

 

 

NC

 

 

I/O

136

NC

I/O

 

 

 

 

 

 

 

 

 

 

53

 

 

NC

 

 

I/O

137

NC

I/O

 

 

 

 

 

 

 

 

 

 

54

 

 

GND

 

 

NA

138

GND

N/A

 

 

 

 

 

 

 

 

 

 

28 Technical Information Manual

Page 35 Page 37
Page 36
Image 36
IBM 6288, 6268, 6278 manual Pin Assignments, System memory connector pin input/output, Pin Signal Name
Page 35 Page 37

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.
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