Cassette TI-99/4a
Available at Texas Instruments TI-99/4A computers.
Pinout
9 PIN D-SUB MALE at the Computer.
9 PIN D-SUB FEMALE at the Cassette cable.
| Pin | Name | Direction | Comment |
|---|---|---|---|
| 1 | Cass 1 motor control | → | CRU bit 22 |
| 2 | Dito | → | neg |
| 3 | Output to tape 2 | → | CRU bit 25 |
| 4 | Audio gate | → | CRU bit 24 |
| 5 | Output to tape 2 | → | neg |
| 6 | Cass 2 motor control | → | CRU bit 23 |
| 7 | Dito | → | neg |
| 8 | Input from tape 1 or 2 | ← | CRU bit 27 |
| 9 | Dito | ← | neg |
Notes:
- Direction is Computer relative Cassette.
- Cassette 1 can't be written to.