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Atari XL User Manual

Atari XL
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202 The
Ateri
XL
Handbook
Key
not
valid
Sketch
programs
before
writing
the
BASIC
what
each
section
should
be
doing,
and
how
it
should
be done.
4
Write
the
BASIC
routines
for
each
section
of
the
program
-
writing
them
on
paper
and
not
typing
straight
into
the
XL.
Try
to
write
each
section
of
the
program
so
that
it
is
as
independent
as
possible
of
the
other
sections,
and
arrange
the
routines
with
a
clear
sequential
flow
from
beginning
to
end:
avoid
jumping
around
with
GOTO.
Use
a
different
set
of
line
numbers
for
each
section,
beginning
each
at
a
round
number
of
so
many
thousands
or
tens
of
thousands.
5
Now
type
the
program
into
the
XL.
6
The
program
will
not
work!
At
this
stage
you
can
sort
out
all
the
errors
easily.
If
you
have
designed
the
program
well,
with
different

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Atari XL Specifications

General IconGeneral
Release Year1983
CPUMOS Technology 6502C
GraphicsANTIC, GTIA
SoundPOKEY (4 channels)
StorageCassette tape
PortsCartridge
Operating SystemAtari BASIC
CPU Speed1.79 MHz
RAM64 KB

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