parallele cable amiga

[that_punk_guy]

MAKING A CABLE

The following connections need to be made on a DB25 cable:

You are making a cable that connects the two PARALLEL ports of your Amiga together.

CABLE:  
Connect D7-D0,SEL,POUT, and BUSY across,
Connect ACK (FLAG interrupt) to SEL locally:

       (2-9)   D7-D0   ------------    D7-D0
       (12)    POUT    ------------    POUT
       (11)    BUSY    ------------    BUSY       PARALLEL PORT
       (13)    SEL     --+------+--    SEL
       (10)    ACK     -/                    \-    ACK
       (18-22) GND     ------------    GND  (18-22)

Double check the gender for the DB25 connectors you will need to connect to your Parallel Port.

A500/A2000, Parallel port is Female so you need a Male connector A1000, Parallel port is Male so you need a Female connector.


The easiest thing to do is to buy a premade cable with all 25 lines passed and DB25 connectors on both ends (Double check the gender's that they match before you buy the cable!)  And then rip it apart and cut-and-seal those wires which are not supposed to be connected.  

You also need to bridge ACK to SEL as per the diagram
above ON BOTH ENDS OF THE CABLE, as shown above.

   ** NEVER PLUG IN AN UNMODIFIED CABLE BETWEEN THE TWO COMPUTERS!

   ** DOUBLE CHECK YOUR CABLE BEFORE INSTALLATION!


WARNING! INTERFERENCE WITH SERIAL-PORT.

       The RI (Ring Indicate) line on the Amiga's serial port uses the SEL line to source a transitor.  This interferes with the SEL line which, as you can see, is part of the network.

Be sure that

(a) either no serial cable is attached or that
(b) It doesn't connect RI or that
(c) your modem doesn't connect RI internally.