250
User's
Handbook
to
the
Atari 400/ 800
Computers
If
an
INPUT# statement attempts
to
read
beyond
the end
of
a disk
file,
an
error
will
result.
The
GET
statement
is
used
to
read a single
numeric
value
via
the
opel"] channel specified.
GET
uses
the
following
configuration:
GET
#channe/,
numeric
variable
The
channel
specified must be open
for
input.
The
numeric
variable
indicated
will
accept the value
returned
by
GET.
This
value will lie
between
0 and
255.
When
GET
is
used
with
the
810
Disk
Drive
and the
buffer
is
empty,
the initial
GET
statement will result in a
block
of
data
being
read
into
the disk
buffer.
The first value in the
buffer
will
be
assigned
to
the
numeric
variable specified
with
the first
GET
statement.
Each
successive
GET
statement will read a value
from
the
buffer.
When
the
buffer
has
been
emptied
,
another
block
of
data
will
be
read
into
the
buffer
from
the diskette.
NOTE
and
POINT
NOTE and POINT are BASIC statements that aid
the
user in
random
access
of
Atari disk files. Random
access
is
only
possible
with
DOS version
2.0
.
The
NOTE statement
will
return
the
position
of
the file
pointer.
The file
pointer
will
be referenced using
two
separate data items.
One
data item
is
the
number
of
the last sector accessed. The
other
data
item
is
the
number
of
the last character referenced
within
that sector.
The
NOTE statement
uses
the
following
configuration:
NOTE
#channe/
, sector, character
The NOTE statement will reference the file
opened
with
the
specified
channel
number.
The
number
of
the last sector
accessed
will
be assigned
to
the variable given in sector. The
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