I would like to connect to Atari Falcon to the internet using null modem
cable via laptop with linux.
I have read this information how configure on Patrice Mandin webpage
http://pagesperso-orange.fr/patrice.mandin/en/howto-net-ppp.html
"TCP/IP connection between Atari and Linux"
Additional informations. Because on the laptop I have not a RS232 port I
use special converter USB2RS232. I check this port and cable null modem
using on the linux this command
picocom /dev/ttyUSB0
and when I press a key I had this letter on the screen.
I try this on Kubuntu linux distribution, but I have heard that OpenSuse
is better.
The question is:
Does Somebody experience to use internet via null modem cable, or maybe
another configuration I can used ?
From Mintlist I heard that another metod is
...
there is another way of connecting via null modem cable: slattach.
Do you know what can I do ?
Thank you for all
best regards
Piotr Mietniowski
In this instance what you could do is run a BBS type software on the
Falcon so you can see if you are connecting.
Alternately (same as null modem on DOS/WIN) run a telecoms program on
the Falcon (and picocom on linux), if it displays the key you typed on
the opposite machine, then you are in business
> I try this on Kubuntu linux distribution, but I have heard that OpenSuse
> is better.
this is irrelavent, because it must work at console/terminal level
first.
> The question is:
> Does Somebody experience to use internet via null modem cable, or maybe
> another configuration I can used ?
>
> From Mintlist I heard that another metod is
> ...
> there is another way of connecting via null modem cable: slattach.
>
quote: "A simple way to convert a serial line to SLIP mode is by using
the slattach tool."
http://www.faqs.org/docs/linux_network/x-087-2-slip.operation.html
http://linux.about.com/library/cmd/blcmdl8_slattach.htm
This is a replacement for Patrices PPPD method, and not useful if you
cant get the serial port on the usb working
> Do you know what can I do ?
>
> Thank you for all
>
> best regards
>
> Piotr Mietniowski
what both these options presume is that you have a working RS-232
interface on the linux side. The easiest way to do that is to connect
to a modem. When you can do basic modem requests (ATI0: capital a-tee-
eye-zero)
At the end of the day, you need to make sure that BOTH sides your null
modem are setup the same (the RS-232 parts) otherwise no reliable
communication will happen, this is easily done with telecoms program
on each end.
The setting should be something like 8, none, 1
7 or 8 - number of bits used to transmit data
none - parity bits, only useful on modems
1 - number of stop bits
The other important setting is speed, Patrice go it working at 115200
once that is working, then follow the instructions on Patrice Mandin's
webpage
You might want to check out the types of null modem cable also:
http://www.lammertbies.nl/comm/info/RS-232_null_modem.html
for getting the setting right, try some of the following
windows: http://www.lookrs232.com/help/commport_settings.htm
linux: http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Serial-HOWTO.html#set_serial
your linux side should be done with:
# pppd -detach crtscts lock noauth local 192.168.0.1:192.168.0.2 /dev/
ttyUSB0 115200 &
From what I can tell, this should be enough to get things working
(pppd must have its own 8,none,1 settings), but you should read ythe
following concerning your convertor:
http://www.mjmwired.net/kernel/Documentation/usb/usb-serial.txt
"Virtual COM port (VCP) drivers cause the USB device to appear as an
additional COM port available to the PC." (has linux drivers)
http://www.serialgear.com/USB-PRODUCT-DETAILS.cfm?sku=USBG-232&catid=461&cats=461
Hope that helps a bit, setting up RS-232 is not a common thing
anymore, experience getting a USB one working is even less common, but
the above should help as long as you can get the devices set up
properly. The virtual com port will probably be named different from
the USB port, it one is used on linux. Read "usb-serial.txt" to find
specific drivers..
Paul