Atari 400 User Manual

Atari BASIC Reference Guide 135
EXAMPLE
10 DIM A$(10)
20 FOR A = 1 TO 100
30 PRINT A$, A 1\ 2
40 IF A 1\ 2>500 THEN END
50 NEXT A
LIST "D :PROGR.BAS", 5, 45
In the previous example, the LIST statement saves lines 10
through 40 on the disk. The line numbers that are specified (5
and 45) do not exist in the program, so the section of the program
with line numbers between those values is saved.
The device code "0: can be used only if one disk is in use . If more
than one disk is available, the number of the disk must also be
specified.
The
LIST statement can also be used to display a program on the
monitor. The LIST command displays the entire program on the
screen
unless the LIST statement is followed by line numbers .
If
one line number follows the LIST statement, the line of the
program with that line number is displayed. If the program does
not have a line with the line number specified in the LIST
statement, the LIST statement has no results.
EXAMPLE
LIST 20
20
FOR A = 1 TO 100
READY
If
two line numbers are specified, those two lines are displayed
along
with all the code between those line numbers . If either or
both of the specified line numbers do not appear in the
program , the section of the program between those line
numbers is displayed.
The LIST statement can also be used with a printer. The statement

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)