docs/85355: [patch] Error in the pin numbers of the described connector in the Handbook (serial).
Yar Tikhiy
yar at comp.chem.msu.su
Wed Aug 31 10:10:30 UTC 2005
The following reply was made to PR docs/85355; it has been noted by GNATS.
From: Yar Tikhiy <yar at comp.chem.msu.su>
To: Julien Gabel <jpeg at thilelli.net>
Cc: "Gary W. Swearingen" <garys at opusnet.com>, bug-followup at FreeBSD.org
Subject: Re: docs/85355: [patch] Error in the pin numbers of the described connector in the Handbook (serial).
Date: Wed, 31 Aug 2005 14:03:11 +0400
On Tue, Aug 30, 2005 at 11:48:35AM +0200, Julien Gabel wrote:
>
> >> We may show two or three different designs in the handbook if we
> >> can tell the reader about their merits. The problem with the design
> >> currently in the handbook is that it is erroneous *and* bogus. I'd
> >> suggest adding another row to the table so that it becomes evident
> >> that DTR on this side is connected to DSR+DCD on the other side
> >> while DTR on the other side is connected to DSR+DCD on this side.
>
> > The Note below the pin-out is supposed to make it evident, and with
> > the Note the design is symmetric.
>
> I tend to think the note is ok here, too.
I'd really like to see the design scheme all-sufficient without the
note. The note may clarify the scheme and help the reader to
comprehend it, but the note should by no means be crucial to follow
the scheme. It is the matter of adding a mere row to the table:
...
DTR 20 connects to 6 DSR
DTR 20 connects to 8 DCD
DSR 6 connects to 20 DTR
DCD 8 connects to 20 DTR
The reader is free either to install an internal strap between pins
6 and 8 in each connector or to use two pairs of wires to connect
pins 6 and 8 on each side to the single pin 20 on the other side.
--
Yar
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