Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site umcp-cs.UUCP Path: utzoo!watmath!clyde!burl!mgnetp!ihnp4!zehntel!hplabs!hao!seismo!rlgvax!cvl!umcp-cs!chris From: chris@umcp-cs.UUCP Newsgroups: net.unix,net.unix-wizards Subject: Re: CXR problem with a modem Message-ID: <8099@umcp-cs.UUCP> Date: Sat, 11-Aug-84 22:29:26 EDT Article-I.D.: umcp-cs.8099 Posted: Sat Aug 11 22:29:26 1984 Date-Received: Tue, 14-Aug-84 00:38:14 EDT References: <768@ucla-cs.ARPA> Organization: U of Maryland, Computer Science Dept., College Park, MD Lines: 16 There are lots of possible solutions, but we happen to like one in particular: add another major device number that allows opens without waiting for a carrier, and simultaneously suspends normal opens. In fact we use just such a modified driver for our UUCP dialout. Our 3 Vadic 3451s can be (are) used for dial in and dial out ``simultaneously'' without modifying anything but the kernel. If there is enough interest I'll post the changes to the 4.2BSD dz.c. (Similar changes in dh.c accomplish the same thing for DH lines, and I'm sure the same can be done for DMFs; we just happen to have the Vadics on DZs.) -- In-Real-Life: Chris Torek, Univ of MD Comp Sci (301) 454-7690 UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris CSNet: chris@umcp-cs ARPA: chris@maryland