Apple III Serial Port: Cables for the Anadex DP-9500 and DP-9501

III SERIAL PORT            Cable       Printer Connector
 
Frame Ground ............(FG)...... 1  <-----> 1.....(FG)
Transmit Data            (Tx) ..... 2  <-----> 3.....(Rx)
Receive Data             (Rx) ..... 3
Request to send          (RTS) .... 4
Clear To Send            (CTS) .... 5
Data Set Ready           (DSR) .... 6  <-----> 19....(SCTS)
Signal Ground ...........(SG)...... 7  <-----> 7.....(SG)
Data Carrier Detect      (DCD) .... 8
Secondary Clear To Send  (SCTS) ... 19
Data Terminal Ready      (DTR) .... 20
 
NOTE: Check Parity, Baud Rate, Stop Bits...