Question about modems

On 11/15/2019 8:09 PM, Fred Cisin via cctalk wrote: I can speak to all modems, as I gave away most of mine. But the one I have right now has the following behavior: AT -> OK at -> OK aT -> CR, no LF, essentially echoing back the CR that was sent At -> same AAAAAAAT -> OK aaaaaaat -> OK Aaaaaaat -> At behavior aAAAAAT -> aT behavior AaaaaaT -> OK (AT found) aAAAAt -> OK (at found) abcdefgAT -> OK (AT found) abcdefgat -> OK (at found) AbcdefaT -> aT behavior aBCDEFAt -> At behavior The rule seems to be: once you find an a, save it.? If you find more as, just ignore, but if you see a non a non T, reset.? Once a t is found, check case with saved char.? If same case, detect parity and continue with command. I have no idea.? Guess I'll have to create a small text file and have people pipe it into modems and see what comes out. It's been a cool exersize, and sorry I annoyed so many people with the trivial details of modems :-) Jim -- Jim Brain brain at jbrain.com www.jbrain.com