Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: Notesfiles; site trsvax.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!inuxc!pur-ee!uiucdcs!trsvax!uhclem From: uhclem@trsvax.UUCP Newsgroups: net.micro.trs-80 Subject: Re: COMM Message-ID: <70700021@trsvax.UUCP> Date: Mon, 24-Sep-84 11:15:00 EDT Article-I.D.: trsvax.70700021 Posted: Mon Sep 24 11:15:00 1984 Date-Received: Thu, 27-Sep-84 06:08:05 EDT References: <259@packard.UUCP> Lines: 49 Nf-ID: #R:packard:-25900:trsvax:70700021:37777777600:2112 Nf-From: trsvax!uhclem Sep 24 10:15:00 1984The problem that was reported (by AT&T) in COMM was that every so often a character would be dropped or repeated. This was caused by a mistake in the management of the 2K buffers that are dynamically allocated/deallocated when they are required. If you haven't seen it, you aren't alone. You had to be running at high baud rates and receiving for long periods just to start allocating buffers at all. Below 2400 baud, the screen driver can keep up pretty well. The operating system vendor found that the rate was about 1 goof per million characters at 9600 baud and 1 goof per 3 million characters at 4800. TRSDOS 6.2 (at last) fixes this problem. In case you missed the earlier mail on this, here is a copy of a termcap that works fairly well with COMM: t6|comm6|TRSDOS COMM Model 4/4P:\ :am:co#80:li#24:\ :cr=^]:bc=^X:ho=^\^P^Q:nl=^Z:\ :cl=^\^_:cd=^_:ce=^^:\ :up=^[:do=^Z:nd=^Y:\ :so=^P:se=^Q:xt: This works great as long as you don't want to use ^Q/^S. Seems COMM justs passes the codes straight to the video driver which uses ^Q to start reverse video. This causes lots of laughs when the host tells your system to resume transmission and the screen switches to reverse video too. If you really have to use ^Q/^S, you can do so by losing reverse video capability. Or you can switch the reverse video codes to something else at the host and write a filter to insert in front of the video driver which translates the new codes back to the old reverse video control characters and hands them to the video driver. (There are several "do nothing" control codes available.) "Thank you, Uh Clem." Frank Durda IV @