Date   : Thu, 16 May 1996 18:16:36 +0100
From   : jx91@... (Chris Lam)
Subject: Re: BBC <-> PC connexion, the final message

>Having disected the cable that I use this is what I found :-
>
>9 Pin   25 Pin    PC                       BBC            5 Pin DIN
>D-Type  D-Type    ==                       ===             Domino
>  5       7       0V            <--------> Gnd               C
>  2       3       Data In (RxD) <--------> Data Out (TD)     B
>  3       2       Data Out (TxD)<--------> Data In (RD)      A
>  6       6       DSR           <--------> RTS               E
>  4      20       DTR           <--------> CTS               D


Dear all,

I've managed to get the BBC and my Mac to talk with just 2 lines, namely

   BBC GND -> MAC GND
  DATA OUT -> DATA IN

and similarly for my Ataris. The handshaking is not important for simple
file transfers.


Chris Lam,
Horizon Keeper.