Chapter 1 Hardware Installation
37
Step 11 Connect SCSI I/O,
Continued
50-Pin Low-Density SCSI Connector
The MegaRUM motherboard includes a 50pin low-density
0.0100” pitch shrouded SCSI connector for each SCSI channel. The pinout for
the 50-pin low-density connector is specified in SCSI-2 X39T9.2 project 375R,
revision 10K, April 28, 1993.
50-Pin Low-Density SCSI Connector Pinout
Signal
Connector Pin
Cable
Pin
Cable
Pin
Connector Pin
Signal
Ground
1
1
2
2
-DB(0)
Ground
3
3
4
4
-DB(1)
Ground
5
5
6
6
-DB(2)
Ground
7
7
8
8
-DB(3)
Ground
9
9
10
10
-DB(4)
Ground
11
11
12
12
-DB(5)
Ground
13
13
14
14
-DB(6)
Ground
15
15
16
16
-DB(7)
Ground
17
17
18
18
-DB(8)
Ground
19
19
20
20
-DB(P)
Ground
21
21
22
22
Ground
Reserved
23
23
24
24
Ground
OPEN
25
25
26
26
Reserved
Reserved
27
27
28
28
TERMPWR
Ground
29
29
30
30
Reserved
Ground
31
31
32
32
Ground
Ground
33
33
34
34
-ATN
Ground
35
35
36
36
Ground
Reserved
37
37
38
38
-BSY
Ground
39
39
40
40
-ACK
Ground
41
41
42
42
-RST
Ground
43
43
44
44
-MSG
Ground
45
45
46
46
-SEL
Ground
47
47
48
48
-C/D
Ground
49
49
50
50
-REQ
Cont’d
Summary of Contents for MegaRUM
Page 1: ...MegaRUM Dual Pentium II PCI ISA Motherboard User s Guide MAN 758 6 5 97 ...
Page 8: ...MegaRUM PCI Motherboard User s Guide 4 MegaRUM PCI Motherboard Layout ...
Page 11: ...Chapter 1 Hardware Installation 7 Step 2 Configure CPU Speed Continued Cont d ...
Page 12: ...MegaRUM PCI Motherboard User s Guide 8 Step 2 Configure CPU Speed Continued ...
