Re: Apple //e to PC Null modem cable pinout

[phoenyx <phoenyx@texas.net>]

Gary Kratochvil wrote:

> phoenyx wrote:
>
> > > > SSC side      Modem side
> > > > 25-pin Dsub   25-pin Male Dsub
> > > >
> > > >    2 -------> 2
> > > >    3 <------- 3
> > > >    4 -------> 4
> > > >    5 & 8 <--- 5
> > > >    6 <------- 8
> > > >    7 <------> 7
> > > >    20 ------> 20
>
> > Basically you are fooling the handshaking routines built into the compters. Most simple
> > programs
> > don't even use the handshake. For instance, ADT.
> >
> > On the cable from Rubywand. Yes, you are shorting those wires,  It is easiest to hook 5
> > to 8
> > then 8 to 5 on the other connector.  This cable does not fool the hardware handshake
> > routines
> > and is better for PC to Apple terminal programs and transfer protocals such as Zmodem.
>
> I see shorting 5 & 8 and connecting to 5 on the PC side but I don't see
> shorting 8 & 5 on the PC side. Is that your suggestion? Doesn't also
> then short 6 on the SSC side? Since I need to get down to 9 pins to get
> into my PC is there any difference in the two cables if I still need to
> use a 25 to 9 pin adaptor?
>
> > >  RTS (7) --\                /-- RTS (4)
> > >  CTS (8) --/                \-- CTS (5)
> > >
> > >  CD  (1) --\                /-- DSR (6)
> > >  DSR (6) --+                +-- DTR (20)
> > >  DTR (4) --/                \-- CD  (8)
>
> If I understand this correctly I can connect directly from SSC 6 to PC
> 20. Then on the
> SSC side solder a jumper wire from 1 and 4 to 6 and on the PC side
> solder a jumper wire from 6 and 8 to 20?
>
> Thanks for your time!
> Gary

Hope you got the email I sent. It has a simpler cable.

Phoenyx