Date: Fri, 21 Aug 1998 19:00:50 +0000 From: Mike Smith <mike@smith.net.au> To: Gregory Sutter <gsutter@pobox.com> Cc: Mike Smith <mike@smith.net.au>, hardware@FreeBSD.ORG, questions@FreeBSD.ORG Subject: Re: VT320 terminal connection problems Message-ID: <199808211900.TAA11611@dingo.cdrom.com> In-Reply-To: Your message of "Fri, 21 Aug 1998 18:54:52 MST." <19980821185452.E924@notabene.zer0.org>
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> On Fri, Aug 21, 1998 at 05:27:59PM +0000, Mike Smith wrote: > > > > > > I've got a genuine DEC VT320 that I'm trying to hook up to a FreeBSD > > > box. I've got the MMJ to 25-pin serial connector, so the physical > > > connection is no problem, but I can't get any communication between > > > the FreeBSD box and the VT. > > > > You probably need a "null modem" adapter. > > Instead of the DEC cable that I've got now? I wonder if it is meant > to connect a VT to a hub of some sort, which then would go back to a > server. Then I'd need to switch some wires in the cable. In addition to the cable you have now. > Are there any DEC experts in the house? VAX people, maybe? I have wired more serial devices than I can remember. If you are able to build your own adapter, between a pair of DB25 connectors cross 2 & 3, 4 & 5, and connect 6, 8 & 20 together on either side. This is a "terminal null modem". Keeping 6, 8 & 20 together on either side means that power-cycling the terminal won't kick you off. You may want to do this eg. if you want to save power/heat etc. -- \\ Sometimes you're ahead, \\ Mike Smith \\ sometimes you're behind. \\ mike@smith.net.au \\ The race is long, and in the \\ msmith@freebsd.org \\ end it's only with yourself. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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