Atari 400 Basic Reference Manual page 35

aexp1
aexp2
filespec
Code number to determine input or output opera-
tion.
Code 4
8
12
6
9
input operation
output operation
input and output operation
disk directory input operation
(In this case, the filespec is the search specifica-
tion.)
end-of-file append (output) operation. Append is
also used for a special screen editor input mode.
This mode allows a program to input the next
line from E: without waiting for the user to press
lim!Jm.
Device-dependent auxiliary code. An 83 in this
parameter indicates sideways printing on a printer
(see appropriate manuals for control codes).
Specific file designation. Must be enclosed in quota-
tion marks. The format for the filespec parameter
is shown in Figure 5-2.
"D 1 : A T A R I 8 0 0 . B A S"
-
_ _ ____.Jl . . . . . .
V' ,
~
Device
-----.:1•
Code
Device
Number
(optional)
Required - - - - - - - '
Colon
File name - - - - - - - - - - - - - - '
(up to 8
characters-
must begin
with alphabetic
character)
Period required
-------------..l
as separator if
extender is used.
Extender-------------------~
(optional)-
Includes
0-3 characters
Figure 5-2 Filename Breakdown
Note:
Filenames are
not used with
the program
recorder.
The CLOSE command simply closes files that have been previously opened with
an OPEN command. Note in the example that the aexp following the mandatory
#character must be the same as the aexp r eference number in the OPEN state-
ment.
IIO Commands and Devices 27