Atari 400 User Manual

114 User's Handbook to the Atari 400/ 800 Computers
END
An END statement ends the execution of the program. An END is
not necessary at the end of a program because executio n stops
automatically after the last line of code . However, it is good
programming technique to end BASIC programs with an END
statement.
CONFIGURA TlON
END
When an END statement is executed, all I/ O channe ls will be
closed except
0, the display will be set to graphi cs mode 0, and all
sound will be turned off.
EXAMPLE
10 INPUT X
20 IF X<= 10 THEN END
30 PRINT "X IS LARGER THAN 10"
40 GOTO 10
The previous example will end only if a value of X is entered
which is less than or equal to 10.
ENTER
ENTER is used to recover programs that have been saved on a
cassette
or disk. ENTER can only be used to load programs that
were saved with the LIST statement.
CONFIGURATION
ENTER device[: fi lespec 1
When an ENTER statement is executed, the computer's memory
is not erased. As a result, the new progr am being loaded wi ll be
put into memory together with any existing program lin es. For

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)