    


PC DB9 Male pinout:

1       2       3       4       5
DCD     RXD     TXD     DTR     GND
in      in      out     out

    6       7       8       9
    DSR     RTS     CTS     RI
    in      out     in      in
    NC                      NC
    

Mac DIN8 Male pinout:

            6       7       8
            TXD+    GPIn    RXD+
            NC      DCD     GND

        3       4               5
        TXD-    GND             RXD-
        √                       √

            1               2
            DTR             CTS
            RTS
            HSKo            HSKi (clock)



Mac                     PC
DIN8                    DB9
1           DTR/RTS     6 or 8  DSR/CTS
2 (2 and 7) CTS/DCD     4 or 7  DTR/RTS
3           TXD-        2       RXD
4 (4 and 8) GND/RXD+    5       GND
5           RXD-        3       TXD
                        4,5     RTS/CTS


Final wiring:

Mac                     PC
DIN8                    DB9
1   black   DTR/RTS     8       CTS     6       DSR
2   brown   CTS         7       RTS     4       DTR     
3   red     TXD-        2       RXD
4   pink    GND         5       GND
8   purple  RXD+        "       "
5   yellow  RXD-        3       TXD
6   green   TXD+
7   blue    DCD
