Date: Thu, 16 Mar 95 14:39:44 MST From: terry@cs.weber.edu (Terry Lambert) To: dufault@hda.com (Peter Dufault) Cc: freebsd-hackers@freefall.cdrom.com Subject: Re: Multiport serial cards Message-ID: <9503162139.AA24742@cs.weber.edu> In-Reply-To: <199503161856.NAA04963@hda.com> from "Peter Dufault" at Mar 16, 95 01:56:37 pm
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> The Digiboard intelligent cards (about $1000.00 and no driver yet). > > I thought there were comments about Digiboard being uncooperative. I've > contacted them and the technical information is available on their > bulletin board and their dysfunctional www site. > > Any thoughts on: [ ... ] > 3. Scoop about Hayes and Digiboard. I have nothing but good to say about Digiboard; they were the first company with a finite state automaton to guarantee that transparent print requests comeing in on a seperate "printer" device did not cause a screw up in case the physical terminal with the printer port on it was in the middle of processing an escape sequence from the regular tty device. I believe they were also the first to have "multidrop" boards that actually worked (multiple serial ports multiplexed in a small fan out box on the end of an RS422 line, with a 422 board in the host running at some high rate of speed). Altos did this first, but they messed up by having a single input and output queue so that until a write was satisfied, you couldn't do a read. The ONLY thing that is standing in the way of a driver there, IMO, is the lack of someone with hardware and a determination to write a driver. Terry Lambert terry@cs.weber.edu --- Any opinions in this posting are my own and not those of my present or previous employers.
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