> > I've finally gotten a hold of a restored ASR-33. One question I have > concerns the paper tape reader. > > My recollection of using this TTY in the 70's was that the reader switch > lever had 4 positions; on this tty there are 3. I know that for I have to > add a reader control relay to interface to my PDP-8. >
I've only ever seen the ones with 3 position levers, but from reading the manuals I think the 3 position levers are manual control models and 4 position levers are automatic control models (with extra levers and swtiches in the stunt box to start and stop the reader using XON/XOFF characters) > So the question is: does having the 3 vs. 4 position reader lever affect > using this with a PDP-8? The 3 position lever models (manual control) can certainly take the reader run relay and be used with PDP8s and PDP11s. -tony
