8 PIN MINI-DIN FEMALE at the computer.
It’s possible to connect RS-232 peripheral to the RS-422 port available on Macintosh computers. Use RXD- as RXD, TXD- as TXD, Ground RXD+, Leave TXD+ unconnected, GPi as CD.
|2||HSKi/CLK||IN||Input Handshake or External Clock|
|3||TXD-||OUT||Transmit Data (-)|
|5||RXD-||IN||Receive Data (-)|
|6||TXD+||OUT||Transmit Data (+)|
|7||GPi||IN||General Purpose Input|
|8||RXD+||IN||Receive Data (+)|
- Direction is DTE (Computer) relative DCE (Modem)
- GPi is connected to SCC Data Carrier Detect (or to Receive/Transmit Clock if the VIA1 SYNC signal is high). Not connected on the Macintosh Plus, Classic, Classic II, LC, LC II or IIsi.