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- Path: america.com!not-for-mail
- From: "Holger Kruse" <kruse@america.com>
- Newsgroups: comp.sys.amiga.networking
- Subject: Re: AmiTCP/PPP/Amosaic problem
- Date: Tue, 09 Jan 1996 07:27:49 -0500
- Organization: private Amiga site
- Message-ID: <kruse.53114582@america.com>
- References: <4c7kh8$3rr@parsifal.nando.net> <19960108.7D33088.E468@daemon.apana.org.au> <19960108.11B2908.D601@olympus.net>
- Reply-To: "kruse" <kruse@cs.ucf.edu>
- NNTP-Posting-Host: lafayette.ppp.america.com
- X-NewsReader: IntuiNews 1.3a (7.9.95)
-
- In article <19960108.11B2908.D601@olympus.net>, Don Schmelling
- <dons@olympus.net> wrote:
-
- > : As an example, I tried to get ppp0.config to dial using serial.device at
- > : 19200bps, and then repeated the exercise at a speed of 38400bps.
- > As long as the modem supports a dte rate, it does not matter what you set
- > it to in this case.
-
- This is not true. It can make a big difference if you set the serial speed
- to 19200, 38400 or 57600, because depending on your screen mode, number of
- colors etc. there is a limit on the speed that the Amiga builtin serial
- port can handle. Once you exceed this speed you will get random lost
- characters.
-
- > : The dialscript contained:
- > : send "ATZ"
- > send "ATZ\R"
-
- NO !!! This is already part of the SEND command.
-
- > : So I changed to a replacement for the serial device -- 8n1.device -- and
- > : retried whithout any problems whatsoever. There are other devices that
- > : would equally be as good.
- > :
- > I do not agree with your assumptions, or methodology, but I do agree with
- > your end result. I use 8n1.device myself.
-
- Apparently your problem was caused by bandwidth limitations. The original
- Commodore serial.device needs more overhead (and thus a higher available
- chip mem bus bandwidth) during a serial interrupt, so switching to a
- different device may help.
-
- I would recommend you do not use 8n1.device though. It seems to work okay
- for some users, but I have received quite a lot of "bug reports" about
- ppp.device crashing, which in all cases was in fact caused by bugs in
- 8n1.device.
-
- The other replacement serial devices (v34, baudbandit etc.) do not seem to
- have this problem.
-
- > The problem with that little script you wrote is that you never told the
- > modem
- > that there was an EOL. So the modem just sits there waiting for an EOL.
- > If you type atz in a term program you automatically hit the return key.
- > So you need to tell the modem the same thing when you use a script.
- > The \r combination signifies a <return> with my Supra Fax/Modem V.34
- > external,
- > and I believe that this is fairly standard.
-
- This is already part of the SEND command, so do NOT use something like
- `SEND "ATZ\r'. If you do not want to send a raw binary string without the
- trailing line feed you can use SENDBIN.
-
- > I hope you can see that the problem you are experiancing is a user error
- > and
- > not a software error with the serial.device.
-
- Not true...
-
- --
- Holger Kruse kruse@cs.ucf.edu kruse@america.com
- http://www.america.com/~kruse/home.html
-
-