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9 pin D-SUB male connector layout
9 pin D-SUB male connector
at the computer
Pin Name Dir Coment
1 Cass 1 motor control OUT CRU bit 22
2 Dito OUT neg
3 Output to tape 1 & 2 OUT CRU bit 25
4 Audio gate OUT CRU bit 24
5 Output to tape 1 & 2 OUT neg
6 Cass 2 motor control OUT CRU bit 23
7 Dito OUT neg
8 Input from tape 1 IN CRU bit 27
9 Dito IN neg
Note: Direction is Computer relative Cassette.
Note: Cassette 2 can´t be read from.
pin 3 = neg.    pin5 = pos.
9 pin D-SUB female connector layout
9 pin D-SUB female connector
at the Cassette cable
Pinout status: +0 -0
According to 1 reports in our database (0 positive and 0 negative) the Cassette TI-99/4a pinout may be incorrect.

Is this pinout
NO DIY devices
Source(s) of this and additional information: Hardware Book, http://www.mainbyte.com/ti99/hardware/cassette/recorder.html
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