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!burl!ulysses!mhuxr!mhuxj!houxm!whuxlm!akgua!sdcsvax!rfox From: rfox@sdcsvax.UUCP (Richard Fox) Newsgroups: net.micro.cbm Subject: modem - assembly Message-ID: <570@sdcsvax.UUCP> Date: Mon, 7-Jan-85 13:52:22 EST Article-I.D.: sdcsvax.570 Posted: Mon Jan 7 13:52:22 1985 Date-Received: Fri, 11-Jan-85 08:09:08 EST Organization: EECS Dept. U.C. San Diego Lines: 25 I have a question dealing with open files in assembly language and the rs232. I would like to re-write my basic term program into assembly language. To do this I need to have 2 opened output devices and 2 opened input devices. The routines will be structured like this: rs232 - input - open screen -output - open --------------------- keyboard - input - open rs232 -output - open To keep switching my input and output files do I have to close the rs232 and then reopen it or can I just keep switching which channel is now the input/output channel without closing the other one? All suggestions welcomed thanks rich