Tandy 1400 LT User Manual page 72

Chapter
6
When
under program
control,
we
recommend
using the
result
code
numbers
instead
of the English words.
Toward
the
beginning
of
the program,
input the
command AT
V0<CR>
to the
modem.
It is
usually easier
for a
program
to interpret
a single
character than
a
series.
The
modem
can
only perform one command
line at a time. Wait
for the
result
code
before sending another
command.
6.19
Escape
Code
Precaution
In
some
contexts,
it
may
be
desirable
to disable
the Escape Code;
e.g.,
when
the
modem
is
in
answer
mode
while attached
to a
com-
puter operating
in half
duplex.
The
reason
for
this
is
that
if
the
distant
computer
should
inadvertently send
the
Escape Code
as
part of
its
message,
the
modem
would
revert
to
the
Command
State
when
the
string
is
echoed
by the
computer.
All subsequent
data
will
be
construed
as
commands
with
unpredictable
results.
NOTE:
To
disable the Escape Code,
define the
Escape
Character
in register
S2
as a
non-ASCII
(i.e.,
greater
than
127)
value.
6-16