Atari 800XL User Manual

There are 29 graphics
characters built into the
keyboard for when you
want to brighten up a
chart, create a work of
computer art, or even do
a little video doodling,
Advanced programmers
may find many uses for
the characters,
You can display gra-
phic characters on the TV
screen by pressing
CONTROL and the keys
shown below, If you want
to produce a number of
graphics characters. get
into the CONTROL LOCK
mode by pressing CON-
TROL and CAPS. Get out
of the CONTROL LOCK
mode by pressing CAPS
only for lower-case char-
acters or SHIFT CAPS for
upper-case characters,
When switching from
the international charac-
ter mode (see next page),
use this BASIC poke:
POKE 756, 224 [Press
RETURN]
Then .press CONTROL
and the keys shown
below to display graphic
characters on the TV
screen,

Atari 800XL Specifications

General

Manufacturer	Atari
Type	Home computer
Release year	1983
CPU	MOS Technology 6502C
RAM	64 KB
ROM	24 KB
Operating System	Atari OS
CPU Speed	1.79 MHz (NTSC) / 1.77 MHz (PAL)
Graphics	ANTIC and GTIA chips
Display resolution	160×192 to 320×192 pixels
Sound	POKEY chip
Storage	Cassette tape, floppy disk
Ports	Serial, parallel, monitor, joystick ports