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000265_news@newsmaster….columbia.edu _Sat Aug 30 05:51:22 1997.msg
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From: jonathan@DSG.Stanford.EDU (Jonathan Stone)
Newsgroups: comp.protocols.kermit.misc,comp.unix.questions,comp.unix.admin,comp.unix.misc,comp.unix.ultrix,comp.unix.shell
Subject: Re: Do not get connected at 33.6K
Date: 30 Aug 1997 09:48:32 GMT
Organization: Stanford Distributed Systems Group
Lines: 52
Sender: jonathan@Cup.DSG.Stanford.EDU (Jonathan Stone)
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References: <5tsn5b$o9q@newslink.runet.edu> <5u1fh6$n39$1@apakabar.cc.columbia.edu> <5u1mrf$il7@usenet.srv.cis.pitt.edu> <5u289d$3qi$1@nntp.Stanford.EDU> <5u41kn$5sb$1@apakabar.cc.columbia.edu>
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Xref: news.columbia.edu comp.protocols.kermit.misc:7582 comp.unix.questions:116191 comp.unix.admin:70343 comp.unix.misc:35316 comp.unix.ultrix:31811 comp.unix.shell:54387
In article <5u41kn$5sb$1@apakabar.cc.columbia.edu>, fdc@watsun.cc.columbia.edu (Frank da Cruz) writes:
> In article <5u289d$3qi$1@nntp.Stanford.EDU>,
> Jonathan Stone <jonathan@DSG.Stanford.EDU> wrote:
> : The preferred Ultrix software interface for ttys is POSIX-compatible
> : termios. I have no idea what C-Kermit uses.
> :
> Not to prolong this unnecessarily, but C-Kermit supports all versions of
> Ultrix back to 1.0, which probably predates POSIX.1.
Do you mean version 1 of Ultrix-11 or of ultrix32/ultrix-32m? All
predate 1988, and therefore POSIX.1. I'd be pleasantly suprised if
C-Kermit links successfully on Ultrix-11 systems with split I/D, and
hugely suprised if it links on Ultrix-11 systems without split I/D.
(ISTR early Ultrix relases ran on 11/34s.)
Still, I assume you know this best...
> I'm perfectly willing
> to add any code necessary to support higher serial speeds and hardware flow
> control, but I have yet to see any evidence that these are supported by any
> version of Ultrix.
Ummm, have you tried ioctl(fd, TIOCMSET, ....)?
AFAIK this ioctl is present in Ultrix 4.0 and was used by SLIP and
PPP, though it may not be documented anywhere, and may not have been
in earlier versions. Ask someone with access to Ultrix source code
for the mode bits to enable RTS and CTS; I beleive they're
device-independent, at least for DECstations.
> Finally, regarding all the jumpers, external clocks, etc, obviously those
> are not Kermit issues, but I trust that if some Ultrix version supports
> some baud rate, say B57600, and the software tries to set it on a physical
> device that does not support it, that the driver will return the appropriate
> error status code.
Obviously jumpers and external clocks are not Kermit issues.
My apologies.
But this thread *is* quite widely cross-posted, including comp.unix.ultrix.
The things I referred to earlier were hardware issues. I was
specifically correcting some not-quite-correct posts about what
DECstation _hardware_ is capable, which I read on
comp.unix.ultrix. (NetBSD is on-topic there, and NetBSD supports
hardware features that Ultrix doesn't.)
As best I know, Ultrix itself does not support speeds above 38400.
Supporting NetBSD-specific DECstation features (like speeds above
38400 or modem control) is something we should probably discuss via
e-mail, if it needs any explicit support at all.