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Pin I/O Signal Pin I/O Signal
17 N/A GND 47 N/A GND
18 I/O SCSI PARITY 48 O REQ
19 N/A GND 49 N/A GND
20 N/A GND 50 I/O I/O
21 N/A GND 51 N/A GND
22 N/A GND 52 (Open)
23 N/A GND 53 (Open)
24 N/A GND 54 (Open)
25 (Open) 55 (Open)
26 N/A TERMPWR 56 (Open)
27 N/A GND 57 (Open)
28 N/A GND 58 (Open)
29 N/A GND 59 (Open)
30 N/A GND 60 (Open)
Internal SCSI Connector
The internal SCSI connector (50-pin) is used to connect the SCSI bus
to an external SCSI device or subsystem. The pin assignments of
the 50-pin connector are shown below.
2
1
50
49
25
26
Pin I/O Signal Pin I/O Signal
1 N/A GND 26 N/A TERMPWR
2 I/O SCSIDATA (0) 27 N/A GND
3 N/A GND 28 N/A GND
4 I/O SCSIDATA (1) 29 N/A GND
5 N/A GND 30 N/A GND
6 I/O SCSIDATA (2) 31 N/A GND
7 N/A GND 32 I/O ATN
8 I/O SCSIDATA (3) 33 N/A GND
9 N/A GND 34 N/A GND
10 I/O SCSIDATA (4) 35 N/A GND
11 N/A GND 36 I/O BSY
12 I/O SCSIDATA (5) 37 N/A GND
13 N/A GND 38 I/O ACK
14 I/O SCSIDATA (6) 39 N/A GND
Appendix B. SCSI Information B-3
Title: C74AMST CreationDate: 06/23/93 17:09:07