IBM 8646 Hardware Maintenance Manual - Page 81
Control/Data, Input/Output
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Page 81 highlights
Table 16. 68-pin SCSI connector pin-number assignments Pin Signal Pin Signal 1 +Data 12 35 -Data 12 2 +Data 13 36 -Data 13 3 +Data 14 37 -Data 14 4 +Data 15 38 -Data 15 5 +Data P1 39 -Data P1 6 +Data 0 40 -Data 0 7 +Data1 41 -Data 1 8 +Data 2 42 -Data 2 9 +Data 3 43 -Data 3 10 +Data 4 44 -Data 4 11 +Data 5 45 -Data 5 12 +Data 6 46 -Data 6 13 +Data 7 47 -Data 7 14 +Data P 48 -Data P 15 Ground 49 Ground 16 DIFFSENS 50 Ground 17 Term power 51 Term power 18 Term power 52 Term power 19 Reserved 53 Reserved 20 Ground 54 Ground 21 +Attention 55 -Attention 22 Ground 56 Ground 23 +Busy 57 -Busy 24 +Acknowledge 58 -Acknowledge 25 +Reset 59 -Reset 26 +Message 60 -Message 27 +Select 61 -Select 28 +Control/Data 62 -Control/Data 29 +Request 63 -Request 30 +Input/Output 64 -Input/Output 31 +Data 8 65 -Data 8 32 +Data 9 66 -Data9 33 +Data 10 67 -Data 10 34 +Data 11 68 -Data 11 Installing options 73
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