Sharp MZ-700 Basic Manual page 84

86
5.1.3 BSD (BASIC Sequential Access, Data File) Control Statements
Note: For file descriptors FD and CMT
WOPEN #
WOPEN #3 "FD2:S Opens the file for write-in so that one BASIC sequential
PRINT #
CLOSE #
KILL #
ROPEN #
INPUT
#
EO DATA 1"
access file (BSD) can be made. In other words, it defines
the filename of the BSD being made as "SEQ DATAl",
and opens, as logical number 3, a file in floppy disk drive
number 2.
PRINT #3. A. AS Writes in, in order, the content of variable A and string
variable AS on BSD; a file opened in logical number 3 by
the WOPEN # statement.
File close is executed by the CLOSE # statement, and
BSD is formally registered as one BSD.
CLOSE #3 Closes the BSD, the file opened in logical number 3 by
(Corresponding to the WOPEN # statement.
WOPEN#)
KILL #3
By closing the file, one BSD with the file name specified
by the WOPEN # statement is made on the specified
floppy disk, and the logical number (3 in this instance)
becomes undefined once more.
Kills the BSD, the file opened in logical number 3 by the
WOPEN # statement. In other words, it cancels or erases
the BSD, and the logical number (3 in this instance)
becomes undefined once more.
ROPEN #4.
n
FD2: SE Opens the file for read-out of the data in the BASIC
o
DATA2·
sequential access data file (BSD). In other words, it
opens, as logical number 4, the BSD file "SEQ DATA2"
in volume number 7 of the floppy disk in floppy disk drive
number 2.
INPUT #4. A(1). BS
Reads out sequential data from the BSD, a file opened in
logical number 4 by the ROPEN # statement, and
substitutes numerical data in array variable A( 1) and
string in string variable B$.
Read-in data are sequentia,lIy accessed from the BSD
heading data.