IBM INTELLISTATION E PRO 6204, User Manual

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Chapter 5. Installing options
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Setting SCSI IDs: Each SCSI device connected to a SCSI controller must have a
unique SCSI ID. This ID enables the SCSI controller to identify the device and ensure
that different devices on the same SCSI channel do not attempt to transfer data
simultaneously. SCSI devices that are connected to different SCSI channels can have
duplicate SCSI IDs. Refer to the information that is provided with the device for
instructions on setting its SCSI ID. With a SCSI adapter installed in your computer,
you can use its 68-pin SCSI connector to connect different types of SCSI devices.
To install SCSI devices, you must have an optional PCI SCSI adapter installed. Refer
to the information that is provided with the device for instructions to set its SCSI ID.
Table 10. SCSI connector-pin assignments.
Pin Signal Pin Signal Pin Signal Pin Signal
1 +DB (12) 18 TERMPWR 35 –DB (12) 52 TERMPWR
2 +DB (13) 19 RESERVED 36 –DB (13) 53 GROUND
3 +DB (14) 20 GROUND 37 –DB (14) 54 GROUND
4 +DB (15) 21 +ATN 38 –DB (15) 55 –ATN
5 +DB (P1) 22 GROUND 39 –DB (P1) 56 GROUND
6 +DB (0) 23 +BSY 40 –DB (0) 57 –BSY
7 +DB (1) 24 +ACK 41 –DB (1) 58 –ACK
8 +DB (2) 25 +RST 42 –DB (2) 59 –RST
9 +DB (3) 26 +MSG 43 –DB (3) 60 –MSG
10 +DB (4) 27 +SEL 44 –DB (4) 61 –SEL
11 +DB (5) 28 +C/D 45 –DB (5) 62 –C/D
12 +DB (6) 29 REQ 46 –DB (6) 63 –REQ
13 +DB (7) 30 +I/O 47 –DB (7) 64 –I/O
14 +DB (P) 31 +DB (8) 48 –DB (P) 65 –DB (8)
15 GROUND 32 +DB (9) 49 GROUND 66 –DB (9)
16 DIFFSENS 33 +DB (10) 50 GROUND 67 –DB (10)
17 TERMPWR 34 +DB (11) 51 TERMPWR 68 –DB (11)
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