From owner-freebsd-questions Sun Aug 22 14:51: 2 1999 Delivered-To: freebsd-questions@freebsd.org Received: from nisser.com (n2000039.telekabel.chello.nl [212.187.0.39]) by hub.freebsd.org (Postfix) with ESMTP id EDA9D155C5 for ; Sun, 22 Aug 1999 14:50:59 -0700 (PDT) (envelope-from roelof@nisser.com) Received: from nisser.com (roelof [10.0.0.2]) by nisser.com (8.9.3/8.9.2) with ESMTP id XAA00511; Sun, 22 Aug 1999 23:49:08 +0200 (CEST) (envelope-from roelof@nisser.com) Message-ID: <37C0705C.AE85E0EF@nisser.com> Date: Sun, 22 Aug 1999 23:49:16 +0200 From: Roelof Osinga Organization: eboa - engineering buro Office Automation X-Mailer: Mozilla 4.6 [en] (WinNT; I) X-Accept-Language: en MIME-Version: 1.0 To: Isaac Flemming Cc: questions@FreeBSD.ORG, Kenny W Drobnack Subject: Re: Dumb terminal(s) through serial connection(s) References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Isaac Flemming wrote: > > > According to all the FAQ's/tutorials I have read my terminals (assuming > they are properly connected) should be getting a login prompt but they are > not. I am very new at this and am at a total loss as what to try next. Is > there any way I can be sure the terminals are connected correctly (I am > pretty sure they are, I am using standard serial/modem cables), and if > they are connected correctly is there anything I am missing? Yes there is. As others have already said you need null-modem cables. If you don't have them you can make 'm quite easily. The most basic form is connecting pins 2-3, 3-2, 7-7. The next thing you need to do is to setup the handshaking. With the minimum cable, or when you're still testing, you need a lower baudrate and no handshaking. So 9600 bps, tops. Then try and see if something happens. If not hook up 2 CRTs with that null-modem cable and see if you type on one it appears on the other and vice-versa. If not I hope you got MC-1488/89's (or something like that, been awhile). Static electricity is known to blow those chips. They're responsible to up the UART TTL signals to RS-232C levels. Only after that you go to higher baudrates and handshaking. You will be wanting hardware handshaking, since that's fastest and frees the ^Q & ^S keys (XON, XOFF). Howewer that will also mean you'll need at least another wire in your cable connecting the right pins. Is described in the Wyse manual. HTH, Roelof -- Home is where the (@) http://eboa.com/ is. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message