Do you have the correct baud rates and parity info set on the DOS
terminal??
Go buy yourself a breakout box with LED indicators and put that on your
cable to see if any indo is going back and forth (green LED = high, red
LED = low) and see if in fact you have any data going through. The bax
might cost $10 or so but worth is.
Paul D. Farber II
Farber Technology
717-628-5303
[EMAIL PROTECTED]
On Tue, 28 Jul 1998, Joseph Martin wrote:
> Hello,
> I have been trying to set up a terminal for my dad. He is using an old
> 386 with a bootdisk running C-Kermit for MSDOS. I am running Linux 2.0.34
> (Slackware 3.4). I am trying to use a null modem cable to connect out two
> serial ports together. We are using the 25 pin serial ports. The null modem
> adapter I bought at CompUSA did not work, so my dad took apart the serial
> cable and rewired it to these specs:
>
> PC male DB25 Terminal DB25
> TxD Transmit Data 2 --> 3 RxD Receive Data
> RxD Receive Data 3 <-- 2 TxD Transmit Data
> RTS Request To Send 4 --> 5 CTS Clear To Send
> CTS Clear To Send 5 <-- 4 RTS Request To Send
> DSR Data Set Ready 6
> |
> DCD Carrier Detect 8 <-- 20 DTR Data Terminal Ready
> SG Signal Ground 7 --- 7 SG Signal Ground
> 6 DSR Data Set Ready
> |
> DTR Data Terminal Ready 20 --> 8 DCD Carrier Detect
>
> The connect still does not work! I have Linux using agetty for the serial
> connection. It ran for half an hour without any errors, but the terminal
> showed nothing on the screen. Is that the right config for a serial PC-PC
> connection? How can I test if the serial ports and cable actually work?
>
> Joseph Martin
>
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