Re: null modem cable
 
> Frank Sexton wrote in a message to Minh Van:
>  MV> so you're saying i need the "null modem" cable instead
>  MV> of a direct serial-serial linkup ?
>  FS> Right.  A null modem cable is just a direct serial-serial
>  FS> cable with the xmt/rcv wires crossed.
> You should also cross the handshake lines.
> Regards,
>        David
Lets get this Null Modem cable right so he can actually use it. 
From MS-Dos 6.2, Interlnk Help file;
  
Pin Connections for a Serial Cable 
  
This section describes the wiring specifications for serial Interlnk 
cables. 
  
Make a serial cable with either a 9-pin or a 25-pin female connector on both 
ends. Three wires are required for data transmission: Ground-Ground, 
Transmit-Receive, and Receive- Transmit. Seven wires are required if you 
want to use the remote copy feature. Wire the cable as follows: 
  
9 pin           25 pin              25 pin          9 pin 
=====           ======              ======          ===== 
pin 5           pin 7       pin 7           pin 5 
(Ground-Ground) 
pin 3           pin 2       pin 3           pin 2 
(Transmit-Receive) 
pin 7           pin 4       pin 5           pin 8 
(RTS - CTS) 
pin 6           pin 6       pin 20          pin 4 
(DSR - DTR) 
pin 2           pin 3       pin 2           pin 3 
(Receive-Transmit) 
pin 8           pin 5       pin 4           pin 7 
(CTS - RTS) 
pin 4           pin 20      pin 6           pin 6 
(DTR - DSR) 
  
Pin Connections for a Parallel Cable 
  
This section describes the wiring specifications for parallel Interlnk 
cables. 
  
Make a parallel cable with male DB-25 connectors at both ends. Eleven wires 
are required for data transmission. 
  
25 pin          25 pin 
======          ====== 
pin 2     pin 15 
pin 3     pin 13 
pin 4     pin 12 
pin 5     pin 10 
pin 6     pin 11 
pin 15    pin 2 
pin 13    pin 3 
pin 12    pin 4 
pin 10    pin 5 
pin 11    pin 6 
pin 25    pin 25 (Ground-Ground) 
  
This stuff will work for you if you want it to. 
Later
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