This informations has been found with a genuine TRS-80 cable and a multimeter.
Pin Number |
Pin Name |
Description |
---|---|---|
1 | Motor | Motor sleeve |
2 | GND | Audio Ground |
3 | Motor | Motor tip |
4 | Audio In | Loading from tape |
5 | Audio Out | Saving to tape |
6 | N/C | Not connected |
7 | N/C | Not connected |
The TRS-80 have relay contacts for motor control (2.25mm jack). Audio in and out are 3.5mm mono jack. Pin 6 and 7 are not connected on that original cable. Pin 8 is simply non existant.