Printing In The Direct Mode - Commodore VIC-1525 User Manual

2.
Printing
in
the Direct
Mode
Now
that
you
have gone through
the various printing
commands
and what
they
do,
let's
put
them
to use in practical
applications.
The
DIRECT
mode
allows
you
to
communicate
with your
printer
by
entering printing
com-
mands DIRECTly from
the
keyboard
of
your computer.
The
following
example
illustrates
the entire
DIRECT
mode
listing
process
in a short
BASIC
program.
In
this
example,
a
file
containing
a single
BASIC
statement
is
typed
into the
computer's
memory. The
file is
then
OPENed.
The
output channel
to the printer
is
opened and
the printer
is
"listening" using the
CMD
command.
The
file
is
LISTed.
The
output
channel
is
closed using the
PRINT#
command.
Finally the
file
is
CLOSEd.
The
printer
is
now
out of
use
and
the
computer
is
ready
to
accept
new
commands.
You
type
:
The
screen
displays:
The
printer
prints:
CD
10? "TEST"
10? "TEST"
d;
0PEN3.4
0PEN3.4
RERDV.
®
CMD3
CMD3
RERDV.
®
LIST
LIST 18
PRINT"TEST"
RERDV.
©
PRINT#3
PRINT#3
©
CL0SE3
CL0SE3
RERDV.
3.1
(1)
You
place the data
in
the
computer's
memory.
(2)
You
OPEN
the
file
and
give
it
a
logical
file
number
(Ifn)
of
3.
The
4
(following
the
comma)
makes
the
file
available to the
printer.
(3)
The
printer
is
"listening."
(4)
The program
is
LISTed
onto
the
printer.
The
printer
is
still
"listening."
(5)
Use
the
PRINT#
command
to "unlisten" the
printer.
(6)
You CLOSE
the
file
so that the
lfn
3
can be used
for
something
else.
18.