🚀 go-pugleaf

Hello, all.

I've been trying to hook up a standard terminal to a PC through
the COM1 port using the dos CTTY command.  So far, no luck.  I've 
tried all manner of MODE settings for the com port, so far to no avail.
After doing the MODE command, as in

   MODE COM1:9600,n,8

I do a CTTY COM1

then get either something like

   ERROR WRITING DEVICE COM1 (ABORT RETRY IGNORE FAIL)?

or nothing at all.  The PC just hangs, and won't do anything else 
until it's been rebooted.

To connect the PC to the terminal, I've been using a DB9-to-DB25
cable (DB9 on the PC side, DB25 on the terminal side).  With a breakout
box, I've switched lines 2 and 3 on the terminal (DB25) end of the
cable.

Some different things I've tried are:
   - terminal and PC at 1200, 2400, 9600 baud
   - parity on and off, even or odd
   - 8/7 bits per character at both ends, with 0/1/2 stop bits.

and so far, nothing has worked.  The suspicion I've got, is that
something's wrong with the handshaking.

When I disassembled a terminal connector attached to the 
campus network, the only lines present in the terminal-end
DB25 were
   2  - red
   3  - green
   7  - black
   20 - green

Question:  what lines on the DB25 end of the DB9->DB25 connector
do I need to jumper together to get CTTY to work?

(The hardware I've been trying all this stuff on, is a DEC 386sx-16
for a PC, and an Ergo 301 MicroTerm (a vt100-clone) for a terminal.)

Thanks in advance,

Lou.

-- 
               "Open the pod bay doors, Hal."

            icsu8209@cs.montana.edu :: Lou Glassy