Atari 400 User Manual

78 User's Handbook to the Atari 400/ 800 Computers
If line 200 was revised as follows,
200 X$ = "JOHN"
the following could be output:
JOHN JOHNSON
The addition of a blank space in X$ results in one additional
blank space being output.
CHR$ & ASC Functions
As mentioned earlier, characters are represented with the Atari
as ASCII codes. Atari BASIC's CHR$ function can be used to
translate an ASCII code to its equivalent character. The following
short program illustrates the use of the CHR$ function.
100 PRINT CHR$ (54)
200 PRINT CHR$ (55)
300 END
RUN
6
7
The CHR$ function is often used to represent characters in a
statement,
when that character can not be represented in its text
form. For
example, in the following program,
100 PRINT CHR$(34); "JOHN JOHNSON"; CHR$(34)
200 END
RUN
"JOHN JOHNSON"
quotation marks are specified in th e PRINT statement using their
ASCII code and the CHR$ function .
The
ASC function returns the ASCII code equivalent for its string
argument.
If this string is longer than one character, the ASC
function returns the ASCII code for just the first character in the
stri ng.

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)