From: utzoo!decvax!cca!gwyn@Brl@sri-unix Newsgroups: net.unix-wizards Title: Re: VT100/VT640 ^S/^Q and EMACS Article-I.D.: sri-unix.3139 Posted: Mon Sep 6 18:36:54 1982 Received: Wed Sep 8 01:00:16 1982 From: Doug GwynDate: 4 Sep 82 22:50:57-EDT (Sat) VT100s absolutely MUST have DC3/DC1 (^S/^Q) reserved for their use in flow control. They generate these automatically, sometimes when you might be surprised that they have to slow down the incoming data. There are many other terminals with this same requirement. By the way, all Digital Engineering VT640 Retro-Graphics users should be aware that early firmware (pre-1.4, I think) would lose count of the DC3s and fail to send an DC1, sooner or later, thereby locking the terminal. A new microcode ROM fixes this glitch.