Didnt X-ON, X-OFF start and stop the tape reader? If
so you could have you=
r tape loop end with X-OFF and it would stop itself. Sending X-ON to the t=
ty would start the tape loop....
On an ASR33, that was an option called, IIRC, remote reader control. It
involved a couple of levers in the function box behind the carriage,
contacts that said levers operated, a different reader manual control
switch lever/contacts and some circuitry, including at least one relay,
in the call control unit.
Neither of my ASR33s have it. From what I've heard it was not common in
ASR33s ued with computers, for those it was more common to add a relay in
series with the reader control circuit (using the normal
manual-controlled reader), and control the coil of that relay directly
from the computer interface. DEC, HP and Intel all had
versions of this
modification which are remarkably similar. But of course said
mofification is not useful for making the reader act as an answerback.
-tony