Re: Q: IIc Serial Port Pin Out?

[progreen@ncw.net (Chuck Orem)]

John Dobbins (jad@lns62.lns.cornell.edu) wrote:

> IIc hasd a round DIN-5 connector. I believe pins
> 2 and 4 are transmitted data and received data.
> Anyone know which is which?
> John Dobbins

This ought to help answer your question:

    Apple IIc, Laser 128/128EX Modem Cable
 
  IIc end                              Modem end
(Male DIN-5)                          (Male DB-25)
        1-------------------------------------4  RTS
                                         |
                                          ---20  DTR
        2-------------------------------------2  TD
        3-------------------------------------7  GND
        4-------------------------------------3  RD
        5-------------------------------------6  DSR

IIc male connector pin assignments, looking from the pin end of the male
connector:
 
 1           5
   2      4
       3
 
DB-25 (modem end) Pin assignments, looking from the pin end of the male
connector:
 
 _________________________________________
 \  1  2  3  4  5  6  7  8  9 10 11 12 13 /
  \  14 15 16 17 18 19 20 21 22 23 24 25 /
   -------------------------------------



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