From owner-freebsd-questions Tue Oct 15 15:44:37 1996 Return-Path: owner-questions Received: (from root@localhost) by freefall.freebsd.org (8.7.5/8.7.3) id PAA14182 for questions-outgoing; Tue, 15 Oct 1996 15:44:37 -0700 (PDT) Received: from alaska.net (root@calvino.alaska.net [206.149.65.3]) by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id PAA14168 for ; Tue, 15 Oct 1996 15:44:29 -0700 (PDT) Received: from calvino (calvino.alaska.net) by alaska.net (5.x/SMI-SVR4) id AA29998; Tue, 15 Oct 1996 14:44:25 -0800 Date: Tue, 15 Oct 1996 14:44:24 -0800 (AKDT) From: hmmm X-Sender: hmmm@calvino To: freebsd-questions Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk i'm not to great at UNIX and would appreciate any guidance in proceeding with the following: i have a FBSD box that needs to communicate with another non-UNIX box using a custom async protocol. my current state of ignorance would just like to mark off a BSD com port, throw in a polling-based driver for the marked off port, and be on my way, without further complications. but i think i'm oversimplifying. i think i'd have trouble because the remote PC would cause overruns in the FBSD box due to FBSD interrupts. if i have to use a standard FBSD sio driver for the com port i wish to use, what special considerations/configurations do i need to take into account? can i just connect the 2 PCs with a NULL modem cable and start C coding with some print routines in/out the ports? does it matter whether i use a NULL modem cable between the FBSD box and the remote PC as opposed to 2 radio modems? (diff cfgs?) is there a good libc function that allows you to putarray(numofbytes)/getarray(numofbytes) and puts()/gets() in and out of sio ports? ------------------------------------------------------------------------------ ? http://www.alaska.net/~hmmm ------------------------------------------------------------------------------