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echo: maximus
to: ROY J. TELLASON
from: GREG MACLELLAN
date: 1997-03-27 17:12:00
subject: maximus using a null-modem cable

 RJT> I've given this a little more thought,  and in 
 RJT> addition to the ground and two signal wires,  I think 
 RJT> that DTR on the remote end could connect to DSR _and_ 
 RJT> CD on the bbs end,  with DTR on that end going back to 
 RJT> DSR on the remote.  That's five wires so far.
Here's something i collected from this echo a long time ago:
Ä fi.muffin: FIDONET: Muffin: (Maximus Tips'n'Tricks) ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
Msg#:  7027  high 7096     - 6991      
From: Cliff Robinson                   Aug-11-96 17:25:30
To:   Craig Johnstone                  Aug-12-96 08:23:04
Subj: Null Modem Cables
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
Craig Johnstone wrote in a message to all:
 CJ> Can some one please send me a diagram of how to make my own
 CJ> Null Modems Cable 25 pin  25 pin.  Please dont send me the
 CJ> diagram for DOS's INTERLINK.EXE program, as their diagram
 CJ> doesn't work!
Actually it does work. But here is what I used (not from the dos help).
Null Modem Cable Pinouts
      9 pin    25 pin      Signal Descriptions     25 pin    9 pin
      ------------------------------------------------------------
      pin 3    pin 2     Transmit  Receive     pin 3     pin 2
      pin 2    pin 3      Receive  Transmit    pin 2     pin 3
      pin 7    pin 4          RTS  CTS         pin 5     pin 8
      pin 8    pin 5          CTS  RTS         pin 4     pin 7
      pin 6    pin 6          DSR  DTR         pin 20    pin 4
      pin 4    pin 20         DTR  DSR         pin 6     pin 6
      pin 5    pin 7       Ground  Ground      pin 7     pin 5
Parrallel Cable Pinouts
  25-pin                  Signal Descriptions                 25-pin
--------------------------------------------------------------------------
   pin 1                 Strobe    Data Bit 5              pin 7
   pin 2             Data Bit 0    Error                   pin 15
   pin 3             Data Bit 1    Select                  pin 13
   pin 4             Data Bit 2    Paper End               pin 12
   pin 5             Data Bit 3    Acknowledge             pin 10
   pin 6             Data Bit 4    Busy                    pin 11
   pin 7             Data Bit 5    Strobe                  pin 1
   pin 8             Data Bit 6    Auto Feed               pin 14
   pin 9             Data Bit 7    Initialize              pin 16
   pin 10           Acknowledge    Data Bit 3              pin 5
   pin 11                  Busy    Data Bit 4              pin 6
   pin 12             Paper End    Data Bit 2              pin 4
   pin 13                Select    Data Bit 1              pin 3
   pin 14             Auto Feed    Data Bit 6              pin 8
   pin 15                 Error    Data Bit 0              pin 2
   pin 16            Initialize    Data Bit 7              pin 9
   pin 17          Select Input    Select Input            pin 17
   pin 25                Ground    Ground                  pin 25
Cliff Robinson
--- timEd 1.01
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
I haven't tried this yet, but i'm going to do it soon. (if a pre-made null 
modem cable isn't cheaper than the parts to make it myself ;) )
ttyl, greg
--- Squish/386 v1.11
---------------
* Origin: Nite Raiders BBs (613) 825-1690 (201:935/600)
* Origin: * Chaos BBS * 6i3.389.o816 * Kingston, ON! (1:249/174)

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