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000280_news@watsun.cc.columbia.edu _Thu Feb 25 08:30:05 1999.msg
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From: C Lance Moxley <clm@uiuc.edu>
Subject: Re: Setserial High Speed Help
Date: 25 Feb 1999 13:24:19 GMT
Organization: University of Illinois
Message-ID: <7b3iu3$8c5$1@vixen.cso.uiuc.edu>
To: kermit.misc@mailrelay2.cc.columbia.edu
In comp.os.linux.hardware Mickey Stein <yekkim@cts.com> wrote:
>> This is the part that I need help with. My serial card has a 16650
>> UART. The manufacturer says that it will go 460800bps. So you're
>> saying that if I set the baud_base to 460800 and the divisor to 2
>> I'll be able to get 230400bps if I use spd_cust and set my ppp to
>> use 38400?
> Well it sounds like you're on the right track for setserial. I'd give that a try.
Did it and it works perfectly. Thanks a lot for the help.
>> I've poured over the setserial manual but didn't figure out that
>> 38400 would really mean something else.
> Sorry: I thought it said that right on the man page for setserial.
It does, but I didn't comprehend it until I read your message. I guess
I just needed it said a different way to fully understand it.
> Maybe you need to slow down and get it working at 115K first. All of these isdn modems
> will talk to an async term emulator (like minicom or seyon or even the interactive mode
> of kermit) at 115, but I've yet to see one that'll talk to any modem at 230K. There's a
Actually I have a new 3Com/USR Courier V.90 external modem that also
will talk to a DTE at 230400bps. That's what I used to make sure that
I was actually talking 230400 through my serial port. If you do an &w
followed by an i7 you will see the DTE speed that the modem is talking
to the serial port at.
It seems to do AT commands just fine at 230400 as does the Eicon Diva T/A.
> Anyway.. give that setserial the way you mentioned it a try and good luck with this
> thing. It can be done in linux and you should be able to get both b channels working
> too.
Again, thanks for clearing up what the setserial man page says.
Everything is working like I expected it to now.
--
C Lance Moxley
http://www.uiuc.edu/ph/www/clm