Appendix

A. Connector

pin

assignments

 

 

 

 

 

 

 

 

 

 

 

 

 

Figure

19 (Page

2

of 3).

System Memory Connector Pin Assignments

 

 

 

 

 

 

 

 

Pin

 

x64 Non-Parity

x72 ECC

Pin

x64 Non-Parity

x72 ECC

 

 

 

 

 

 

 

 

 

13

 

DQ9

 

 

DQ9

97

DQ41

DQ41

 

 

 

 

 

 

 

 

 

14

 

DQ10

 

 

DQ10

98

DQ42

DQ42

 

 

 

 

 

 

 

 

 

15

 

DQ11

 

 

DQ11

99

DQ43

DQ43

 

 

 

 

 

 

 

 

 

16

 

DQ12

 

 

DQ12

100

DQ44

DQ44

 

 

 

 

 

 

 

 

 

17

 

DQ13

 

 

DQ13

101

DQ45

DQ45

 

 

 

 

 

 

 

 

 

18

 

VCC

 

 

VCC

102

VCC

VCC

 

 

 

 

 

 

 

 

 

19

 

DQ14

 

 

DQ14

103

DQ46

DQ46

 

 

 

 

 

 

 

 

 

20

 

DQ15

 

 

DQ15

104

DQ47

DQ47

 

 

 

 

 

 

 

 

 

21

 

NC

 

 

CB0

105

NC

CB4

 

 

 

 

 

 

 

 

 

22

 

NC

 

 

CB1

106

NC

CB5

 

 

 

 

 

 

 

 

 

23

 

VSS

 

 

VSS

107

VSS

VSS

 

 

 

 

 

 

 

 

 

24

 

NC

 

 

NC

108

NC

NC

 

 

 

 

 

 

 

 

 

25

 

NC

 

 

NC

109

NC

NC

 

 

 

 

 

 

 

 

 

26

 

VCC

 

 

VCC

110

VCC

VCC

 

 

 

 

 

 

 

 

 

27

 

/WE

 

 

/WE0

111

/CAS

/CAS

 

 

 

 

 

 

 

 

 

28

 

DQMB0

 

 

DQMB0

112

DQMB4

DQMB4

 

 

 

 

 

 

 

 

 

29

 

DQMB1

 

 

DQMB1

113

DQMB5

DQMB5

 

 

 

 

 

 

 

 

 

30

 

/S0

 

 

/S0

114

NC

/S1

 

 

 

 

 

 

 

 

 

31

 

DU

 

 

NC

115

/RAS

/RAS

 

 

 

 

 

 

 

 

 

32

 

VSS

 

 

VSS

116

VSS

VSS

 

 

 

 

 

 

 

 

 

33

 

A0

 

 

A0

117

A1

A1

 

 

 

 

 

 

 

 

 

34

 

A2

 

 

A2

118

A3

A3

 

 

 

 

 

 

 

 

 

35

 

A4

 

 

A4

119

A5

A5

 

 

 

 

 

 

 

 

 

36

 

A6

 

 

A6

120

A7

A7

 

 

 

 

 

 

 

 

 

37

 

A8

 

 

A8

121

A9

A9

 

 

 

 

 

 

 

 

 

38

 

A10/AP

 

 

A10/AP

122

BA0

BA0

 

 

 

 

 

 

 

 

 

39

 

NC

 

 

BA1

123

NC

A11

 

 

 

 

 

 

 

 

 

40

 

VCC

 

 

VCC

124

VCC

VCC

 

 

 

 

 

 

 

 

 

41

 

VCC

 

 

VCC

125

CK1

CK1

 

 

 

 

 

 

 

 

 

42

 

CK0

 

 

CK0

126

A12

A12

 

 

 

 

 

 

 

 

 

43

 

VSS

 

 

VSS

127

VSS

VSS

 

 

 

 

 

 

 

 

 

44

 

DU

 

 

NC

128

CKE0

CKE0

 

 

 

 

 

 

 

 

 

45

 

/S2

 

 

/S2

129

NC

/S3

 

 

 

 

 

 

 

 

 

46

 

DQMB2

 

 

DQMB2

130

DQMB6

DQMB6

 

 

 

 

 

 

 

 

 

47

 

DQMB3

 

 

DQMB3

131

DQMB7

DQMB7

 

 

 

 

 

 

 

 

 

48

 

DU

 

 

NC

132

A13

A13

 

 

 

 

 

 

 

 

 

49

 

VCC

 

 

VCC

133

VCC

VCC

 

 

 

 

 

 

 

 

 

50

 

NC

 

 

NC

134

NC

NC

 

 

 

 

 

 

 

 

 

51

 

NC

 

 

NC

135

NC

NC

 

 

 

 

 

 

 

 

 

52

 

NC

 

 

CB2

136

NC

CB6

 

 

 

 

 

 

 

 

 

53

 

NC

 

 

CB3

137

NC

CB7

 

 

 

 

 

 

 

 

 

54

 

VSS

 

 

VSS

138

VSS

VSS

 

 

 

 

 

 

 

 

 

55

 

DQ16

 

 

DQ16

139

DQ48

DQ48

 

 

 

 

 

 

 

 

 

26 Technical Information Manual

Page 34
Image 34
IBM 6268, 6288, 6278 manual Connector, Pin X64 Non-Parity X72 ECC

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.