Commodore Amiga A500 Technical Reference Manual page 167

Ground
Return
1
3
5
7
9
11
1 3
1 5
1 7
1 9
2 1
2 3
2 5
2 7
2 9
3 1
33
Table 5-2 Connector JO
Disk Control Signal Pin Assignments
Signal
Pin Signal Name
2
Head Select 3
4
Head Select 2
6 Write Gate
8 Seek Complete
1 0 Track 00
12 Write Fault
14 Head Select 2
16 Reserved
1 8 Head Select 1
20 Index
2 2 Ready
24 Step
26 Drive Select 1
2 8 Drive Select 2
3 0 Reserved
3 2 Reserved
34
Direction In
Table 5-3
Connector C N 1, SCSl
SCSl Connector (DB-25) Female
Pin Name
1 REQ
2 MSG
3 I10
4
RST
5 ACK
6 BSY
7
GROUND
8 DBO
9 GROUND
1 0 D B 3
11 DB5
1 2 DB6
1 3 D B 7
14 GROUND
1 5 CID
1 6 GROUND
1 7 ATN
1 8 GROUND
1 9 SEL
2 0 DBP
2 1 DB 1
22 DB2
2 3 D
B4
24 GROUND
2 5 N.C.