Date: Fri, 11 Apr 1997 09:41:36 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: mango@staff.communique.net (Raul Zighelboim) Cc: mnewton@newland.com, hackers@freebsd.org Subject: Re: Bad speed on modem connected to isdn pot Message-ID: <199704110011.JAA07258@genesis.atrad.adelaide.edu.au> In-Reply-To: <c=US%a=_%p=Communique._Inc.%l=KAORI-970410183427Z-119@kaori.communique.net> from Raul Zighelboim at "Apr 10, 97 01:34:27 pm"
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Raul Zighelboim stands accused of saying:
>
> Could it be that your serial port is a 8550UART ? and therefore, cannot
> handle more thatn 9600 reliably ?
Uhh, the 8550 is a VAX; it probably uses 2681 UARTs (or something even
more weird). You may have meant 8250 8)
Unfortunately, you are both barking up the wrong tree. If you were
to _read_the_sio_manpage_, you would see :
DIAGNOSTICS
sio%d: silo overflow. Problem in the interrupt handler.
sio%d: interrupt-level buffer overflow. Problem in the bottom half of
the driver.
sio%d: tty-level buffer overflow. Problem in the application. Input has
arrived faster than the given module could process it and some has been
lost.
ie. it has nothing to do with baudrate conversion, just with whatever is
actually listening to the line.
> >-----Original Message-----
> >From: Malcolm newton [SMTP:mnewton@newland.com]
> >Sent: Thursday, April 10, 1997 12:39 PM
> >To: hackers
> >Subject: Bad speed on modem connected to isdn pot
> >
> >I have a 28.8 modem attached to the analog side of a 64kb isdn line.
> >The getty is set at 57600. On incoming calls I get tty-level buffer
> >overflows.
> >I think its becaus the 64kb isdn line when converted to analog is
> >transmitting at 64k
> >and 57600 is not fast enough for it. I've bumped it up to 115200 but
> >that doesn't work
> >Whats the next valid speed that would cope with 64k. is 65536 a valid
> >speed. The modem works fine on a regular bell line ??
> > << File: ATT00335.html >>
>
--
]] Mike Smith, Software Engineer msmith@gsoft.com.au [[
]] Genesis Software genesis@gsoft.com.au [[
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