Atari 400 User Manual

Atari BASIC Reference Guide 97
CLOSE (CL.)
The CLOSE statement closes a channel that has been opened for
input, output, or both. However, closing a channel that has not
been opened will not cause an error.
The argument of a CLOSE statement must be the same as in the
corresponding OPEN statement. A channel that has been
opened for the use of a particular I/O device must be closed
before it is used for another device.
CLR
CONFIGURATION
CLOSE #a
EXAMPLE
CLOSE #3
The CLR command cl ea rs the values of the variables in the
memory . However, the variable name table remains unchanged .
As a result, the CLR command does not reduce the number of
variable names. After using CLR, all strings, arrays, and matrices
must
be dimensioned again.
CONFIGURA TION
CLR
EXAMPLE
CLR

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)