Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site sdcsvax.UUCP Path: utzoo!watmath!clyde!bonnie!akgua!sdcsvax!jc From: jc@sdcsvax.UUCP (John Cornelius) Newsgroups: net.micro,net.arch,net.dcom Subject: Re: I/O concensus? Message-ID: <508@sdcsvax.UUCP> Date: Sat, 1-Dec-84 14:28:16 EST Article-I.D.: sdcsvax.508 Posted: Sat Dec 1 14:28:16 1984 Date-Received: Sun, 2-Dec-84 06:08:40 EST References: <694@sjuvax.UUCP> Reply-To: jc@sdcsvax.UUCP (John Cornelius) Distribution: net Organization: EECS Dept. U.C. San Diego Lines: 12 Xref: sdcsvax net.micro:8533 net.arch:708 net.dcom:721 Summary: A DMA coupled terminal subsystem (Xyplex) Xyplex makes a terminal subsystem for VAX that moves the character processing out onto a coax cable network. Boxes on the network perform all driver functions associated with characters. Data is transferred from the net to the VAX in records (usually one line) except when in cbreak mode. Drivers exist for VMS and UNIX. Records are transferred to the terminal in whatever size they are presented to the driver via DMA. The system has the additional feature that it allows up to 256 VAXen or terminal clusters to be connected on the same network. Terminals on any cluster can access any VAX if desired. Each cluster has an equivalent of L.sys and ttys so such things can be restricted of need be.