IBM 6278 Personal Computer User Manual


 
Appendix A. Connector pin assignments
Appendix A. Connector pin assignments
The following figures show the pin assignments for various system board connectors.
Monitor connector
5
1
10 6
15 11
Memory connectors
1
85
84
168
Figure 18. Monitor port connector pin assignments
Pin Signal I/O Pin Signal I/O
1 Red O 2 Green O
3 Blue O 4 Monitor ID 2 - Not
used
I
5 Ground NA 6 Red ground NA
7 Green ground NA 8 Blue ground NA
9 +5 V, used by DDC2B NA 10 Ground NA
11 Monitor ID 0 - Not
used
I 12 DDC2B serial data I/O
13 Horizontal sync O 14 Vertical sync O
15 DDC2B clock I/O
Figure 19 (Page 1 of 3). System Memory Connector Pin Assignments
Pin x64 Non-Parity x72 ECC Pin x64 Non-Parity x72 ECC
1 VSS VSS 85 VSS VSS
2 DQ0 DQ0 86 DQ32 DQ32
3 DQ1 DQ1 87 DQ33 DQ33
4 DQ2 DQ2 88 DQ34 DQ34
5 DQ3 DQ3 89 DQ35 DQ35
6 VCC VCC 90 VCC VCC
7 DQ4 DQ4 91 DQ36 DQ36
8 DQ5 DQ5 92 DQ37 DQ37
9 DQ6 DQ6 93 DQ38 DQ38
10 DQ7 DQ7 94 DQ39 DQ39
11 DQ8 DQ8 95 DQ40 DQ40
12 VSS VSS 96 VSS VSS
Copyright IBM Corp. September 1999 25