Date: Thu, 13 Feb 1997 18:14:04 +1100 From: David Nugent <davidn@labs.usn.blaze.net.au> To: rohit@cs.umd.edu Cc: questions@FreeBSD.ORG Subject: Re: 'tip' to a SUN. Message-ID: <19970213181404.31387@usn.blaze.net.au> In-Reply-To: <199702121916.OAA23249@darling.cs.umd.edu>; from rohit@cs.umd.edu on Feb 02, 1997 at 02:16:12PM References: <199702121916.OAA23249@darling.cs.umd.edu>
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On Feb 02, 1997 at 02:16:12PM, rohit@cs.umd.edu wrote: > A friend of mine is trying to 'tip' to a SUN Machine > thru the serial port (/dev/cuaa1) on a FreeBSD box > running 2.2. > > Somehow, not all characters are able to get across. > For example the characters 's', 'n' and '=' just can't > seem to get across. On the other hand some other characters > like 'e' and 'f' seem to get transferred just fine. I'm willing to bet you have tip calling out with even parity (which is the default), and the other machine set to no parity. > Would somebody know what's going on? A serial null-modem > cable is being used (I don't think the cable is the > problem though). My guess is that some weird encoding is > going on. We tried various combinations of parameters to > stty (2 stop bits, 1 stop bit, no parity etc...) but > nothing seemed to work. What is puzzling is that some > characters work and some don't. Because they're 8-bit characters, and probably be rejected by whatever software you're running on the other system (a shell, or getty?). Let's see: s = 0x73 = 0x01110011 = 5 bits n = 0x6e = 0x01101110 = 5 bits = = 0x3d = 0x00111101 = 5 bits e = 0x65 = 0x01100101 = 4 bits f = 0x66 = 0x01100110 = 4 bits Yep, looks like even parity. The first three get the 8-bit bit set to make the number of bits in the byte even, and the latter two pass through unchanged. Add parity=none to your ~/.tiprc Regards, David Nugent - Unique Computing Pty Ltd - Melbourne, Australia Voice +61-3-9791-9547 Data/BBS +61-3-9792-3507 3:632/348@fidonet davidn@freebsd.org davidn@blaze.net.au http://www.blaze.net.au/~davidn/
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