john@newave.UUCP (John A. Weeks III) (01/15/90)
I read the following somewhere in comp.modems: > Telebit Trailblazer Plus 19.2 modems for sale, model T18PC (internal PC > card version). FCC class B, Canadian 742-1946-A; proms BB4.00 Even/Odd; > board revision FAB-10652-02 rev. E. Does anyone know if a Telebit Trailblazer+ internal modem card will work with Interactive 386/ix 2.0.2? If so, what device does it install as, and what do you have to do to get it to work? Are their any gottchas? Thanks, -john- -- =============================================================================== John A. Weeks III (612) 942-6969 ...!bungia!wd0gol!newave!john =============================================================================== <*** *** Disclaimer: Its my machine, so I can say whatever I want. *** ***>
johnl@esegue.segue.boston.ma.us (John R. Levine) (01/16/90)
In article <8@newave.UUCP> john@newave.UUCP (John A. Weeks III) writes: >Does anyone know if a Telebit Trailblazer+ internal >modem card will work with Interactive 386/ix 2.0.2? Yes, it does. I have one installed in my Intel 302; if you see this message it's because it went out through the Telebit. It installs like an async card, I have mine configured as com2. Setting up /ix for two com ports is slightly tricky but the documentation that comes with the X5 kernel update explains it pretty well. Getting the modem's options set is a pain because it doesn't have a setup EPROM, you have to set them each time the machine boots, and make sure your dialer scripts don't have ATZ in them which will set it back to factory defaults. Again, the X5 doc is quite helpful. I only have one enormous complaint -- it's SLOW. The problem is that the modem has an old 8250 uart soldered in, and the cruddy 386/ix driver loses data like crazy at 9600 bps. Inbound uucp files run about 400 cps, outbound (where data loss is less of a problem) at 800. Jim Murray's free driver is faster, but doesn't have vp/ix hooks. The inexpensive MCS driver is supposed to be a lot faster, but again they don't support vp/ix (not their fault, Interactive hasn't released the specs.) If I feel extremely brave I may try desoldering the 8250 and putting in a shiny new 16550, but the chance of destroying the modem in the process is high. But for $400, I don't know how to do any better. -- John R. Levine, Segue Software, POB 349, Cambridge MA 02238, +1 617 864 9650 johnl@esegue.segue.boston.ma.us, {ima|lotus|spdcc}!esegue!johnl "Now, we are all jelly doughnuts."
bill@inebriae.UUCP (Bill Kennedy) (01/16/90)
In article <8@newave.UUCP> john@newave.UUCP (John A. Weeks III) writes: > [ repeat of the interbal Trailblazer promotion ... ] > >Does anyone know if a Telebit Trailblazer+ internal >modem card will work with Interactive 386/ix 2.0.2? Absolutely! This follow up will go out on an internal TB+, I've been using it in inebriae for nearly a year. There are some caveats, see below. >If so, what device does it install as, and what do >you have to do to get it to work? Are their any >gottchas? Mine's set for plain old COM2 and works just fine with the Jim Murray driver or with the X5 update. Here are the caveats... The modem works absolutely best for outdials. It can be made to work with indials but you have to keep setting S0=1 for it to answer. It doesn't have NVRAM, so you can't (like an external TB+) give it one personality, change that and have it come back on a DTR transition. Before I put it in inebriae, I had it in my '286 luggable which was outdial only. As soon as this assignment is over, it goes into the luggable again, though it has given yeoman service here. One last caveat. I desoldered the 8250 ACE from the board and replaced it with a socket and NS-16550A. It's not for the faint of heart, but with the stock Microport (luggable '286) device drivers I could not get 19,200bps performance out of it. The replacement of the part (only the part), I got reliable uucp transfers at 19,200bps. The Jim Murray driver handles the NS-16550A and hardware handshake just fine. If you're strapped for cash (who isn't), the internal TB+ is a very real alternative to the more desirable external model. >Thanks, > >-john- >John A. Weeks III (612) 942-6969 ...!bungia!wd0gol!newave!john -- Bill Kennedy {texbell,att,cs.utexas.edu,sun!daver}!ssbn!bill bill@ssbn.WLK.COM or attmail!ssbn!bill