Cassette TI-99/4a connector

#Computer#Storage Connectors#Obsolete Computers
9 pin D-SUB MALE connector pin-out & layout

9 pin D-SUB MALE connector  at the computer

PinNameDirComent
1Cass 1 motor controlOUTCRU bit 22
2DitoOUTneg
3Output to tape 2OUTCRU bit 25
4Audio gateOUTCRU bit 24
5Output to tape 2OUTneg
6Cass 2 motor controlOUTCRU bit 23
7DitoOUTneg
8Input from tape 1 or 2INCRU bit 27
9DitoINneg
Note: Direction is Computer relative Cassette.
Note: Cassette 1 can´t be written to.

C64 Cassette connector

CoCo Cassette connector