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Tandy
protocol
mode
operation
2
This chapter
will
give
you an
idea
of
what
the
DCM
212
can
do
in
the
Tandy
protocol
mode.
The
Videotex Plus
communications package
for
Tandy's
Model
II,
12,
16
and 6000 microcomputers
is
used
in
the
sam-
ple sessions following.
With
this
package you can
communicate
with
a
variety
of information
services
and
host
computer
systems.
The
ex-
amples
will
help
familiarize
you
with
some
of
the operations the
Modem
is
capable of performing.
If
you
are
using
an
MS-DOS
operating system,
feel
free
to
move
to
the
auto logon
session
using
DeskMate's Telecom
in
Chapter
3,
Hayes
protocol
mode
operation.
XENIX®
users
may
want
to skip to
Appendix
D.
For a
detailed discussion
of
all
the available
commands
in
Tandy
pro-
tocol, refer
to
Appendix
A,
Sample programming
sessions
All
Modem
functions are controlled
by
ASCII
encoded
commands
that
you
send
from
your
computer
keyboard.
Use
the
wake-up com-
mand
Q Q
to
open
the
DCM
212
for
programming.
When
this
2-key
code sequence
is
issued,
the
DCM
212 automatically
adapts
the
communications
protocol
(speed,
word
length,
parity,
and
stop
bits)
of your computer.
1.
Check
again
that
all
peripherals are correctly
connected
and
receiv-
ing power.
2.
Set the
DIP
switches as
follows:
,m
ill
m
mmmmm
1
2
3
4
5
6
7
8
N
3.
Flip
the
power
switch
on
the
Modem's
front
panel
to
the
ON
po-
sition.
4.
Load
and run
the
Videotex Plus
communications program
as
described
in
your
user's guide,
5.
At
TRSDOS
Ready, type
VIDTEX
(ENTER)
.
TERMINAL
READY
indicator
lights.
13
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