On 13 February 2014 15:07, allison <ajp166 at verizon.net> wrote: Correct, the printer is a 7-bit device which really doesn't care about the high (eighth) bit. E.g. why I said to imagine it as 7N3. Because the printer doesn't care if you're using 7E2, 7M2, 7S2, 7O2, or 8N2. I hadn't heard of the keyboard coming in odd parity. Just even parity and mark parity. Punch and reader are still 8-bit clean, so in local mode if you punch some tape on a parity keyboard you'll get even parity punched data. Stick it in the reader of a mark parity machine and it'll print just fine. That's why the teletypes were used with minis as both tape readers and punches, the computer can read and produce any form of punched tape output. Model 35 machines are similar if I recall, though they do have significantly different mechanics, and support a lot more features than the 33 (being part of the 28 line they had access to a lot of the 28 features, like vertical tabulation). Cheers, Christian -- Christian M. Gauger-Cosgrove STCKON08DS0 Contact information available upon request.

On 13 February 2014 16:45, Paul Koning <paulkoning at comcast.net> wrote: Yup, the 28, 35, and 38 (I think I recall it existing) are all built like tanks. While 28's are relatively abundant 35's seem to be rare (and the 38's -- which am *sure* existed -- might as well have never existed). Though, the 15 while built well, isn't as reliable. It also can't go past 75 wpm speed (and even then it requires a lot more maintenance than usual). It's mostly because the design of the 15 is more typewriter-esque; e.g. instead of a moving type box with a hammer to hit the right pallet of type, it has individual type bars, like on a typewriter. I've heard of that. I've also heard of some heavily used 33s lasting forever. But then again it all depends on the environment, and maintenance. Aside: I would love to get my hands on a model 35 teletype. KSR preferred, mostly since an ASR, while beautiful, is too damn big (at present). Cheers, Christian -- Christian M. Gauger-Cosgrove STCKON08DS0 Contact information available upon request.

On Feb 13, 2014, at 3:35 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote: That seems likely for the 5-bit machines ? those came in lots of different speeds, 75 and maybe even 100 in later machines, 45 or 45.45 or 50 or thereabouts earlier on. Also 1.5 (or some number close to that) stop ?bits?. But I?ve never heard of Model 33 machines at anything other than 110 baud. paul

On 13 February 2014 15:35, Tony Duell <ard at p850ug1.demon.co.uk> wrote: For the 32 I think the gear speeds were 45, 50, and 75 baud. (For 60, 66, and 100 wpm; with 66 being only really prevalent in Europe and places that needed to talk to Europe.) For the significantly less crap model 28, gear speeds were dependent on particular features. For example, the machine could be producing 5N1, 5N2, 5N1.42, 5N1.45... all sorts of options with required different gears. Speed wise, the machines came in 60, 66, 75, and 100 wpm. (The 32 might also have had 75 wpm (56 baud) gears, but I'm not sure.) The model 35 teletype was based on the model 28 equipment, and it showed; the machines are built like tanks, and are less fragile than the 32 or 33. (The 35 still speaks the 1963/1965 uppercase only ASCII of the 33 though.) I think there was also a model 38 which was like the model 37 (a 33 stretched to 14-7/8ths inch wide platen, with full the 1967 ASCII we're familiar with), but based on the model 28/model 35 technology. You'd have to ask someone at GreenKeys about that. Cheers, Christian -- Christian M. Gauger-Cosgrove STCKON08DS0 Contact information available upon request.