Atari 800XL User Manual

You communicate with
your computer through
the keyboard. You can
do a ~otmore, however,
than Just type on this key-
board. You can throw
away your ink eraser and
editing pencils, for you
can transform text and
programs with a few key-
strokes. NOTE: The white
square on the screen is
the cursor. It shows
where you are on the
display.
e board Wizard
Though the ATARI 800XL
keyboard looks and
works much like a type-
wnter, there are keys
that allow you to reach in-
to a bag of editing tricks.
CONTROL and SHIFT
are particularly important
in editinc and in gener-
atmg graphics and inter-
national characters. They
move the cursor delete
or insert charact'ers or
sentences, or change
from upper-case to
lower-case letters.
Another key must be
pressed while holding
down CONTROL or
SHIFT for a command to
be executed.
Since a key's function
may change in certain
programs, always consult
your program user's
guide.
The next few pages
show some of the com-
mands you use to tell
your computer what to
do.

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