Radio Shack TRS-80 model III Owner's Manual page 117

TRS-80
MODEL
III
DISK
SYSTEM
Disk-Related Features
Disk basic
provides a powerful
set
of
commands,
statements
and functions
relating to
disk
i/o
under trsdos. These
fall
into
two
categories:
1
.
File
manipulation: dealing with
files
as units, rather
than with
the distinct
records the
files
contain.
2.
File access:
preparing data
files
for
i/o;
reading and writing
to
the
files.
Under
the
heading, File
Manipulation,
we
will
discuss the
following
commands.
kill Delete a
program
or data
file
from
the disk
load
Load
a
basic
program from
disk
merge Merge
an ASCII-format basic
program on
disk
with one
currently
in
ram
run
"pro
gram" Load and
execute a
basic
program
stored
on
disk
save Save
the resident
basic
program on
disk
Under
the
heading,
File
Access,
we
will discuss the
following statements
and
functions.
Statements
OPEN
CLOSE
INPUT
#
LINE
INPUT#
PRINT#
HELD
GET
PUT
LSET
RSET
Functions
CVD
CVI
CVS
EOF
LOC
Open
a
file
for access (create the
file if
necessary)
Close access
to
the
file
Read from
disk,
sequential
mode
Read
a
line
of data, sequential
mode
Write
to disk,
sequential
mode
Assign
field sizes
and
names
to
random-access
file
buffer
Read from
disk,
random
access
mode
Write
to disk,
random
access
mode
Place value
in
specified buffer
field,
add blanks
on
the
right to
fill
field
Place value
in
specified buffer
field,
add blanks
on
the
left
to
fill
field
Restore double-precision
number
to
numeric form
after
GETting
from
disk
Restore integer to
numeric form
after
GETting
from
disk
Restore single-precision
number
to
numeric form
after
GETting
from
disk
Check
to
see
if
end of
file
encountered during read
get
current record
number.
116