Atari 800 User Manual

Advanced Atari BASIC 83
Variable names are stored in the variable name table until a NEW
command is issued. NEW causes the entire variable name table
to be cleared.
When a program is saved on cassette with the CSAVE statement,
the variable name table
is saved on tape along with the program
itself. If the program is later loaded back into memory with the
CLOAD statement, the variable name table saved on tape will be
read into memory and will take the place of the existing variable
name table.
PEEK & POKE
The PEEK and POKE statements allow direct access to the Atari's
RAM . The Atari can include as many as 65,536 individual
addressable RAM memory locations. Each location is assigned a
number sequentially as its address, from 0 to 65,536.
Every
memory location can store a number in the range 0
through 255 . As mentioned earlier, all data to be stored in
memory must be converted to a number in this range. The Atari
uses various coding strategies for converting BASIC keywords,
text data,
numeric data, graphics displays, and machine language
into a form that can be stored in memory. The Atari knows how
to translate the contents in memory (numbers ranging from 0 to
255) by the context in which that data is used.
The
PEEK function allows the user to examine the va lue stored in
the memory location named as its argument. For example , in the
following statement,
100 N = PEEK(1000)
the value stored at memory location 1000 will be assigned to the
variable N.
The
POKE statement is used to place a value in a specified
memory location . POKE uses the following configuration ,

Atari 800 Specifications

General

Brand	Atari
Model	800
Category	Desktop
Language	English