MECHANICAL THEORY
Th* itOOXL
cornpuler
console Contains
«
single motherboard
which hoisei all
the
chips
of
the fystcrn ^rtd provides
corviectori for
interfacing eiftfrnaJ modules
to the
console.
It includes
the
CPU, RAM, OS and BASIC ROM's,
The motf.etroard
usrs
a
common adAess bus,
data
bus and clock Mnes* The
sirteen-line address bus
allows
the micjopf
ocessor to directly address t'lK
memoTY
locations.
The eight-line
data
bus
provides
the communication and data path between
the fif^ctianaJ modules.
The power is
provided
by an exlernal
power
supply
and rouied
throughout
the
console*
Th A1B/-I
Cat
tfldft
I
Ta
Jofiikk*.
PfttMicft,
etc
CarlrMl*
BASIC
f(OU
[
1
Cnntiolkr
Poru
OfiVf
lUnf
AOU»
Ta DU^
Pr]^t*f«,
CPU
CkculiTf
Clrctilu-yJ
PcDCEuInf
Orciiiry
1ahtic/;tia
CkodlTf}
J
SIO
ICpjr
board
with
huiMm
Video
ModuUu
TcWfUkm
SOOXL Computer
Field Service Manual
Fig l-I. System
Block Diagram
1-2
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