http://www.blackdown.org/~hwb/ca_SerialPortLoopback25CheckIt.html (Amiga Plus Extra No. 5/97, 05/1997)
Used to verify that a port is working. This one works with CheckIt.
(To Computer).
25 PIN D-SUB FEMALE to Computer.
| Name | Pin | Pin | Pin | Pin |
|---|---|---|---|---|
| Jumpering 1 | 2 | 3 | ||
| Jumpering 2 | 4 | 5 | ||
| Jumpering 3 | 6 | 8 | 20 | 22 |