Atari 800 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 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