Pin     Name
 1      REQ
 2      MSG
 3      I/O
 4      RST
 5      ACK
 6      BSY
 7      Ground
 8      Data 0
 9      Ground
10      Data 3
11      Data 5
12      Data 6
13      Data 7
14      Ground
15      C/D
16      Ground
17      ATN
18      Ground
19      SEL
20      Parity
21      Data 1
22      Data 2
23      Data 4
24      Ground
25      Termination Power

Thanks to Greg Scott (National Amiga)