Date: Tue, 14 Aug 2018 07:57:55 -0600 From: Warner Losh <imp@bsdimp.com> To: Eugene Grosbein <eugen@grosbein.net> Cc: Kurt Jaeger <pi@freebsd.org>, FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org> Subject: Re: FreeBSD blocks on BOCHS serial port Message-ID: <CANCZdfrW01Y4OhY4eLtZsq4u5sQof-9m78VdRpKwPUjfafL53g@mail.gmail.com> In-Reply-To: <e3a47bcd-d07e-7f84-d97a-e819da19a290@grosbein.net> References: <e0c6883a-ed3c-c48e-6821-05d0aa3eb034@tu-dortmund.de> <bc8f5df6-e338-a9fd-bdd7-e7e146cbcee7@grosbein.net> <661e5d36-6684-fae5-b325-f02ad570f2b4@tu-dortmund.de> <28c22017-7b01-63b0-946a-d0d255af16b2@grosbein.net> <20180814024729.GM2118@home.opsec.eu> <e3a47bcd-d07e-7f84-d97a-e819da19a290@grosbein.net>
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On Tue, Aug 14, 2018 at 2:17 AM, Eugene Grosbein <eugen@grosbein.net> wrote: > 14.08.2018 9:47, Kurt Jaeger wrote: > > >> 14.08.2018 3:15, Alexander Lochmann wrote: > >> > >>>> You should not rely on defaults and make sure you disable modem > control/CD > >>>> either explicitly (using stty(1) etc.) or implicitly by switching to > /dev/cuau0 > >>>> instead of /dev/ttyu0. Flow control settings should match too, for > both sides > >>>> of virtual port. > >>> Thx. I cannot even run 'stty < /dev/ttyu1' to see the current settings. > >>> It simply blocks... > >> > >> Use /dev/ttyu1.init to see defaults and /dev/ttyu1.lock to set/show > >> locked defaults that cannot be changed without disabling a lock first. > > > > Thanks for this pointer! Is that behaviour written down/explained > > somewhere in the man pages ? > > Sort of. Default serial driver for modern FreeBSD is uart(4) that documents > these file names extremely concisely but does not explain their meaning. > Legacy serial driver sio(4) has manual page describing them in detail. I've copied the sio.4 text into uart.4 since it was good at explaining. Warner
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