PE4600 and Console Redirection

Marc Schmitt schmitt at
Wed Apr 24 11:15:01 CDT 2002

Hi all,

This might not be the right list to post my problem, but I count on the
experience of the readers here. :)

I have the following setup:

PE4600 (A02)
- running RedHat 7.1
- lilo configured to redirect console to com1 (serial=0,9600n8)
- BIOS Console Redirection Serial Port 1, Remote Terminal Type
vt100/220, Redirection after boot disabled

Chase IOLAN+Rack Communication Server
- Speed 9600, Parity None, Bit 8, Stop 1, Flow Ctrl None

The cable:
Made accordingly to the IOLAN User and Administration Guide:

IOLAN (RJ45) DTE			PE4600 (DB9) DTE
4 (TXD) -----------------------------------> 2 (RXD)
5 (RXD) <----------------------------------- 3 (TXD)
6 (GND) ------------------------------------ 5 (GND)

No matter what I do, I do not get the BIOS Console Redirection to work. 
The redirection for Linux works flawlessly.
What I see is:

--- zip ----
md: md6 switched to read-only mode.
Restarting system.
LILO 21.7-5 Loading linux...........................
Linux version 2.4.9-31smp (bhcompile at (gcc version 
2.96 20000731 (Red Hat Linux 7.1 2.96-98)) #1 SMP Tue Feb 26 06:55:00 
EST 2002
--- zip ----

All I get are those cryptic symbols (þùù). Now, the PE4600 Systems 
Service Manual says, that the Client System should use Hardware Flow 
Control. I tried it, BIOS shows now þÿù and typing on the terminal does 
not work anymore at the Linux console.

I think, that with the cable I have, Hardware Flow Control is not 
possible, therefore it doesn't work?

The IOLAN RJ45 Connector has the following Pin setup:

Data carrier detect (109)	in
Request to send (105)		out
Data set ready (107)		in
Transmitted data (103)		out
Received data (104)		in
Signal Ground (102)		ref
Clear to send (106)		in
Data terminal ready (108)	out

Can someone tell me if the problem I have is really the cable and if 
yes, which pins need to be connected on the DB9 connector in addition?
Any pointers are welcome.



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