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3402
64K
FFF
64K
FFF
16K
OF
THE
ZSOA
ADRESSING
RANGE IS
CONFIGURED
TO CRT MEMORY
48K
cooo
ALL
64K
BFFF
OF ZSOA
ZBOA
ADRESSING
ADRESSING
48K
OF
RANGE IS
RANGE
l
.1E
ZBOA
CONFIGURED
ADRESSING
TO
MAIN
RAM
RANGE IS
MEMORY
CONFIGURED
TO
MAIN
RAM
MEMORY
0
0000
0
0000
D="OO"
D::''01"
Figure
2-7.
Memory
Organization
o Main Memory
Four
Main Memory
RAM
loadings
are
available:
16K, 32K, 48K,
and
64K
•
Main
RAM
can
be
accessed
by
both
the
CPU
and
the
Data
Link.
(The
Data
Link
is
a
DMA
path.)
Main
RAM
occupies
addresses
from 0
to
the
upper
limit
of
the
loading;
the
maximum
is
64K.
Note,
however,
that
some
master
units
are
limited
in
the
amount
of
slave
memory
they
can
address
through
the
Data
Link.
2-12
•
•
•

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