EasyManuals Logo

Atari 800 User Manual

Atari 800
326 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #201 background imageLoading...
Page #201 background image
Atari
410
Program Recorder
199
and
RS-232
port.
The
following
is
an
example
of
an
OPEN
statement
used
to
open
a data
file
for
access by
the
410
Program
Recorder.
OPEN #
1,4,0,
"c:"
The first
parameter
in
the
OPEN stateme
nt
indicates
the
channel.
Before
an
external
device
can
be
accessed
either
for
input
or
output,
a cha
nn
el
to
the
device
must
have
been
opened.
The OPEN
statement
assigns a
channel
to
an
external
device.
Once
a
channel
is
assigned,
the
device
can
subsequently
be
accessed via its
channel
numb
er.
Only
one
channel
can be
open
at
anyone
time.
If
an
OPEN
channel
attempts
to
open
a
channel
which
is
already
open,
an
error
will
occur.
The second
parameter
in
the
OPEN
statement
indicates
the
activity
for
which
the
channel
is
being
opened
. For
th
e
410
Program
Recorder,
a value
of
4
indi
cates
the
channel
is
being
opened
to
read data
while
a value
of
8
indi
cates
the
channel
is
being
opened
to
write
data. A cassette
file
cannot
be
simultaneously
open
for
both
input
a
nd
output.
The
third
parameter
in
the
OPEN
statement
is
0
for
standard data
files. The final
parameter
, device, must
be
specified
as
"C:"
for
input
or
output
to
the
410
Program
Recorder.
When
a cassette data
file
is
opened
for
input
or
output,
the
Atari's speaker
will
be
sounded
once
for
input
or
twice
for
output
to
signal
the
operator
to
properly
position
the
tape.
Once
the
tape
has
been
properly
positioned,
the user
should
pr
ess
the
410's play
button,
and
then
press any
key
on
the
Atari.
If
the
file
was
opened
for
output,
the
computer
will
write
the
leader. If
the
file
as
opened
for
output,
it
will
read
the
leader.
This process r
eq
uir
es
approximately
20
seconds.
Once
the
l
eader
has
been
read
or
written,
the
program
must
read
or
write
data
to
the
open
file. If
the
file
was
opened
for
output,
data
mu
st
be
written
to
the
file. If
the
program
fails
to

Other manuals for Atari 800

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the Atari 800 and is the answer not in the manual?

Atari 800 Specifications

General IconGeneral
ProcessorMOS Technology 6502
Processor Speed1.79 MHz
ROM10 KB
GraphicsANTIC and GTIA chips
Release Year1979
Display Resolutionup to 320 x 192
Colors128 colors
Sound4 channels
StorageCartridge, cassette, floppy disk
PortsCartridge, serial, monitor
Operating SystemAtari OS

Related product manuals