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Cassette TI-99/4a

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9 PIN D-SUB MALE at the Computer.

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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.

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