17
OPEN
/ DOPEN
F
unc
tion
OPEN
is
an
in
terpreter command, which create a file
Form
at
BASIC
BASIC
7.0
Syntax
by
open
i
ng
a
channel
for computer·drive
communication.
OOPEN
is
a B
ASIC
7.0 interpret f
il
e control
command
.
OEPN
file'" .device"'.channel"'[,stringS]
OEPN
file'" .device'" .channel"'[,"filename,type,
mode"]
OOPEN#file"', "filename[.SorP
]"
,
[.
Lrecord
l
eng
th
"']
[,
0
dr
ive"']
[.
U
dev
ice] [W]
The
f
il
e'" val
ue
is
from 1
to
255.
The
device"
de
fault value
is
8.
The
dr
ive'" default val
ue
is
O.
The
channel'" volue
is
from 1 to
15
type:
S for sequential
fi
le
p
for program file
U
for user file
L
for l
eng
th of a relative
fi
le
A
for
append
mode
: R
for
re
ad
W
for
wr
it
e
M
for
mod
ity
Where the pr
eceding
letters D
and
U please refer to
S
YN
TA
X.
Ex
ampl
e:
OOPEN#
3,
"
TABLE
", L 1
28
(open
fi
le number 3 relative file "TA
BLE"
wi
th record
length
128
characters.)
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