IBM 865741Y Handbook - Page 123
Table, shows the pin-number assignments for the 68-pin SCSI, connectors.
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Page 123 highlights
Connecting External Options Table 7 shows the pin-number assignments for the 68-pin SCSI connectors. Pin Signal Pin Signal 1 Ground 2 Ground 3 Ground 4 Ground 5 Ground 6 Ground 7 Ground 8 Ground 9 Ground 10 Ground 11 Ground 12 Ground 13 Ground 14 Ground 15 Ground 16 Ground 17 Terminal power 18 Terminal power 19 Reserved 20 Ground 21 Ground 22 Ground 23 Ground 24 Ground 25 Not connected 26 Ground 27 Ground 28 Ground 29 Ground 30 Ground 31 Ground 32 Ground 33 Ground 34 Ground 35 Data 12 36 Data 13 37 Data 14 38 Data 15 39 Data P1 40 Data 0 41 Data 1 42 Data 2 43 Data 3 44 Data 4 45 Data 5 46 Data 6 47 Data 7 48 Data P0 49 Reserved 50 -PRSN 51 Terminal power 52 Terminal power 53 Reserved 54 Ground 55 -Attention 56 Ground 57 -Busy 58 -Acknowledge 59 -Reset 60 -Message 61 -Select 62 -Control/Data 63 -Request 64 -Input/Output 65 Data 8 66 Data 9 67 Data 10 68 Data 11 Table 7. The 68-Pin SCSI Port Connector Pin-Number Assignments Chapter 4. Installing Options 105
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