Atari 800 User Manual

Alari BASIC Reference Guide 163
Program Recorder
A PRINT statement that is used with the Program Recorder is
generally used to store data that will be recovered with an INPUT
statement.
If the OPEN statement for the Program Recorder specifies short
gaps
between the records (special operation code 128), the tape
does
not stop moving. The data is not recorded correctly if the
program does not supply data fast enough to keep up with the
tape.
EXAMPLE
10 OPEN #1 , 8, 0, "C"
20 FOR I = 1 TO 100
30 X = INT (RND (9) * 100)
40 PRINT #1, X
50 NEXT I
60 CLOSE #1
70 END
The
previous example contains a program that records 100
random numbers on tape. Line 10 opens I/ O channel number 1
for output to the Program Recorder. At line 20, a FOR/NEXT loop
is set up to be repeated 100 times. Line 30 assigns a random
number between 0 and 99 to the variable X. At line 40 , the value
of X is printed on tape, using the Program Recorder. Line 50 is the
NEXT statement that completes the FOR/ NEXT loop. Line 60
closes the I/ O channel, and line 70 ends the program .
Disk
A PRINT statement that is used with a disk is generally used to
store data that will be recovered with an INPUT statement.
The
format for using a PRINT statement with a disk is the same as
with the Program Recorder. The appropriate OPEN statement
must precede the PRINT statement. The I/ O channel must be
open for update , append , or output to the disk file .

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS