Need Help w/ Serial Board Config. RH6.2

Need Help w/ Serial Board Config. RH6.2

Post by jjurgen » Thu, 26 Jul 2001 08:44:46



I am running RedHat 6.2 on a Dell Demension XPS D233.  I am trying to
configure a Decision Comp.  ISA PcComm8 card, and having a great deal of
trouble.  This card has 8  6-pin RJ-11 serial ports.  I am trying to connect
the first port to a Win95 serial port and get Netterm to display a login
prompt.

I can't seem to get any activity on the line.

A friend suggested I create a test cable and wire pins 3 to 4 and 5 to 6.
He said any thing that goes out will echo back.  I tried this and it didn't
seem to work.  Does this make sense...

1. I opened a terminal window.
2. []# echo Testing > /dev/tty

"Testing" showed up on the same terminal window.

3. Open new terminal window
4. cat /dev/ttyS16 > /dev/tty

5. Went back to first window.
6. []# echo Testing123 > /dev/ttyS16

7. Nothing happens.  I expected to see "Testing123" on tty, the first
window.

Am I misunderstanding Unix or do I have a problem w/ the configuration??

PcComm8 Card
int 5
BaseAddr 100H
IntVector 140H

[]# setserial -bg /dev/ttyS*

/dev/ttyS0 at 0x03f8 (irq = 4) is a 16550A
/dev/ttyS16 at 0x0100 (irq = 5) is a 16550
/dev/ttyS17 at 0x0108 (irq = 5) is a 16550
/dev/ttyS18 at 0x0110 (irq = 5) is a 16550
/dev/ttyS19 at 0x0118 (irq = 5) is a 16550
/dev/ttyS20 at 0x0120 (irq = 5) is a 16550
/dev/ttyS21 at 0x0128 (irq = 5) is a 16550
/dev/ttyS22 at 0x0130 (irq = 5) is a 16550
/dev/ttyS23 at 0x0138 (irq = 5) is a 16550

[]# ps -ef

...
root       620     1  0 13:56 tty1     00:00:00 /sbin/mingetty tty1
root       621     1  0 13:56 tty2     00:00:00 /sbin/mingetty tty2
root       622     1  0 13:56 tty3     00:00:00 /sbin/mingetty tty3
root       623     1  0 13:56 tty4     00:00:00 /sbin/mingetty tty4
root       624     1  0 13:56 tty5     00:00:00 /sbin/mingetty tty5
root       625     1  0 13:56 tty6     00:00:00 /sbin/mingetty tty6
root       626     1  0 13:56 ttyS16   00:00:00 /sbin/getty ttyS16 9600
root       627     1  0 13:56 ttyS17   00:00:00 /sbin/getty ttyS17 9600
root       628     1  0 13:56 ttyS18   00:00:00 /sbin/getty ttyS18 9600
root       629     1  0 13:56 ttyS19   00:00:00 /sbin/getty ttyS19 9600
root       630     1  0 13:56 ttyS20   00:00:00 /sbin/getty ttyS20 9600
root       631     1  0 13:56 ttyS21   00:00:00 /sbin/getty ttyS21 9600
root       632     1  0 13:56 ttyS22   00:00:00 /sbin/getty ttyS22 9600
root       633     1  0 13:56 ttyS23   00:00:00 /sbin/getty ttyS23 9600
...


           CPU0
  0:    1649853          XT-PIC  timer
  1:       1588          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  5:         24          XT-PIC  serial
  8:          1          XT-PIC  rtc
  9:     275634          XT-PIC  aic7xxx
 10:       2693          XT-PIC  eth0
 12:      16598          XT-PIC  PS/2 Mouse
 13:          1          XT-PIC  fpu
NMI:          0

 
 
 

1. high speed serial boards (was Re: Multiport serial boards)


I am interested to hear more info on the Ethernet based terminal servers
mentioned above for the low entry models.

In fact I have the following situation: one linux box used to link via
SLIP serial connections and LEASED lines my LAN with two other LAN'S
(at both other ends of the lines there are linux boxes). The connections
use two pairs of Penril modems (for leased lines) and some home made
scripts (usual slattach, ifconfig and route stuff). All three serial ports
on the main linux box are now used.
Now all three linux boxes serial boards don't support more than 9600 bps
while the modems support 28,8 kbps and I would like to rise the speed
of the serial lines.

For the moment I don't have a good idea how to do it. Indeed using
terminal servers could turn to be not only expensive but also could lead
to some routing problems. On the other hand using high speed serial boards
could lead to problems concerning the special drivers and the fact that
here I don't seek the usual "logging (dialing) into a linux box process" but
connecting LAN's 24 hours per day with a resonable automatized mechanism
of recovery in case of failure.

If someone can help me with these problems, please reply also to:


Thank you.
-------------------------------------------------------------------------------
Nicolae Mihalache

Institut de Mathematiques de Jussieu

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