Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!rutgers!sri-unix!hplabs!cae780!tektronix!uw-beaver!tikal!sigma!uw-nsr!john From: john@uw-nsr.UUCP (John Sambrook) Newsgroups: comp.terminals Subject: Problems with Zenith Z-49 terminals? Message-ID: <923@uw-nsr.UUCP> Date: Tue, 23-Dec-86 23:51:22 EST Article-I.D.: uw-nsr.923 Posted: Tue Dec 23 23:51:22 1986 Date-Received: Wed, 24-Dec-86 21:14:46 EST Reply-To: john@uw-nsr.UUCP (John Sambrook 5-7433) Distribution: na Organization: UW-Bioengineering, Seattle, WA Lines: 44 Keywords: Zenith, Z-49 I would be interested in hearing from anyone who has one or more Zenith Z-49 terminals. I have noticed what may be a problem and would appreciate additional input from others on the net. We recently received five new Z-49 terminals. Having had nothing but good success with Z-19's and Z-29's we didn't feel it necessary to get a demonstration on our system before purchasing them. To date I have noticed two problems. First, the terminal seems much slower than our other -19's and -29's. Putting a datascope between the terminal and our computer system confirmed this. Lots of flow control going on. However, I can live with this problem. The second, more serious problem is that when listing a long file the terminal will eventually get into a state where it will overprint the last line for a to minute or so before it breaks free and resumes normal operation. Sometimes it never breaks out of this mode and it is necessary to cycle the power on the terminal. While hard to describe the behavior looks a lot like a regular line printer with a paper jam. The problem occurs regularly at 9600 baud and somewhat less frequently at 4800 baud. Software handshaking is enabled. The problem can be demonstrated by cat'ing a long file such as /usr/spool/uucp/LOGFILE. While I first thought that it was something unique to our system I no longer believe this to be the case. A few days ago one of the people I work with reported seeing the same behavior on some Z-49 terminals connected to another system in our department. Our local terminal people feel that we have some early revision ROM's. They gave me the numbers for the latest ROMs and we do indeed have these ROMs installed. I tried to contact Walt Hanza (sp?) at Zenith Data Systems but he has yet to return my (four, to date) calls :-( To close, if you have any information on this problem that you feel might be useful I would appreciate hearing from you. If there is any interest I will summarize to the net. Thanks, -- John Sambrook Work: (206) 545-7433 University of Washington WD-12 Home: (206) 487-0180 Seattle, Washington 98195 UUCP: uw-beaver!uw-nsr!john