Re: Apple //e --> Modem

[progreen@ncw.net (Chuck Orem)]

Bill Scheffler (schefflr@news.msus.edu) wrote:
> 	Here's the problem:

> 	I have an enhanced Apple IIe w/Super Serial Card.  I want to 
> connect it to my old Q-Modem 2400 (Quality Computers).  I followed the 
> directions in the ProTERM 3.1 manual (and the Super Serial Card manual).  

You know, there is voodoo about IIe modem cables.

Conventional wisdom has it that a cable that has pins 2,3 and 7 wired 
straight through will work for you. In fact, the recommended IIe modem 
cable in the ProTerm manual has got 2-8 and 20 wired straight thru. This 
configuration doesn't work for me, for any comm program except Kermit.

My personal theory is that it has to do with the DSR line on the 
straight thru cable. Try clipping off pin 6 from your cable and see if it 
helps.

The cable configuration that I've had 100% success with, is one that I 
made when I ran a BBS off of my IIe. Here are it's pinouts:

  SSC end                             Modem end
(Male DB-25)                         (Male DB-25)
    1-------------------------------------1  Chassis GND
    2-------------------------------------2  TXD
    3-------------------------------------3  RXD
    4-------------------------------------4  RTS
    6-------------------------------------8  DSR
    7-------------------------------------7  Signal GND
    20-----------------------------------20  DTR
    5-------------------------------------5  CTS
       |  Yes, Pins 5 & 8 are jumpered on
    8--      the SSC end of the cable.
 
This cable is a hardware handshaking cable, and works well driving my 
SupraFAXModem at a 19,200 bps DTE rate using ProTERM 3.1.

I have several of these cables made up, and will send you one if you wish 
to try it. Finger my account for my address and such. I'm going to ask 
for $10 for the cable, but for that $10 I'll ship it to you.

--

 Need BinSCII? Need Shrinkit? [] progreen@ncw.net  c.orem@genie.geis.com []
 Need an Apple II Comm Soft?  [] ^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^^ []
 E-mail / Finger me for info! [] ***New Address**  If nothing else works []