Can be found at Sinclair ZX Spectrum's, I think UNKNOWN CONNECTOR at the computer. | Pin | Name | Description | | 1 | SOUND C | Sound C (Can be tied together with A & B) | | 2 | PORT | ? | | 3 | VCC | +5 VDC | | 4 | SOUND B | Sound B (Can be tied together with A & C) | | 5 | SOUND A | Sound A (Can be tied together with B & C) | | 6 | GND | Ground | | 7 | PORT | ? | | 8 | PORT | ? | | 9 | PORT | ? | | 10 | PORT | ? | | 11 | PORT | ? | | 12 | PORT | ? | | 13 | PORT | ? | | 14 | CLOCK | ? | | 15 | CLOCK | ? | | 16 | RESET | Reset | | 17 | A8 | Address 8? | | 18 | BDIR | ? | | 19 | BC2 | ? | | 20 | BC1 | ? | | 21 | D7 | Data 7 | | 22 | D6 | Data 6 | | 23 | D5 | Data 5 | | 24 | D4 | Data 4 | | 25 | D3 | Data 3 | | 26 | D2 | Data 2 | | 27 | D1 | Data 1 | | 28 | D0 | Data 0 |
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