 50 pin Amphenol female connector at the controller & devices | Pin | Name | Dir | Description |
1-25 | GND |  | Ground |
26 | DB0 |  | Data Bus 0 |
27 | DB1 |  | Data Bus 1 |
28 | DB2 |  | Data Bus 2 |
29 | DB3 |  | Data Bus 3 |
30 | DB4 |  | Data Bus 4 |
31 | DB5 |  | Data Bus 5 |
32 | DB6 |  | Data Bus 6 |
33 | DB7 |  | Data Bus 7 |
34 | PARITY |  | Data Parity (odd Parity) |
35 | GND |  | Ground |
36 | GND |  | Ground |
37 | GND |  | Ground |
38 | TMPWR |  | Termination Power |
39 | GND |  | Ground |
40 | GND |  | Ground |
41 | /ATN |  | Attention |
42 | n/c | - | Not connected |
43 | /BSY |  | Busy |
44 | /ACK |  | Acknowledge |
45 | /RST |  | Reset |
46 | /MSG |  | Message |
47 | /SEL |  | Select |
48 | /C/D |  | Control/Data |
49 | /REQ |  | Request |
50 | /I/O |  | Input/Output |
Note: Direction is Device relative Bus (other Devices) |  50 pin Amphenol male connector at the cable |