On Wed, 8 Nov 2023 09:10:54 -0500, Phil Smith III wrote: > >Bob, your musing about communications parameters sounds like full/half duplex. > Mind the difference between half duplex and local echo. The former used only a single current loop and pressing a key during output caused garbled output and perhaps a detected error. With local echo, keystrokes are transmitted correctly to the host (possible carrier frequency multiplexing) and the host may buffer or ignore them.
Stty reports "echo"/"noecho". -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN