So far, I've been using this tool on remotes that had no control
character handling, but it doesn't work on a TRS-80 4P remote.
Much slower, but at least it works.
Later, I'll try to put some order in this so that we use the fast
lane when possible.
So far, I hadn't managed to run those tools properly on OpenBSD. I
was too confused by its stty peculiarities. I'm still confused, but
at least I managed to make them work... most of the time...
By uploading a BASIC loop and then run it, we can reduce the serial
communication to pure content which greatly reduces the overhead and make
the process much much faster.