Owner`s manual
Appendix
1:
Memory
Basics:
AI.I Description Of
Memory
The
RAM
3000
Deluxe
is designed to
provide
up
to
three
megabytes
of
extended
memory
for
AT-compatible
ma-
chines.
In
addition,
up
to
three
megabytes
of
memory
on
the
RAM
3000
Deluxe
can
be addressed as
expanded
memory
under
the
Lotus/Intel/Microsoft
EMS
specification
(Version 320).
This
board
can
also
be
used
to
upgrade
base
memory
to
the
640K
(9FFFFH) base
memory
limit
imposed
by
DOS.
If
you
are
not
familiar
with
the
distinction
between
base,
extended
and
expanded
memory,
refer
to
'the
following explanations.
Base memory -
memory
from
the
0
byte
memory
address
up
to
the
640K limit
(OOOOOH-9FFFFH).
This
memory
area
is
usable by
DOS
for
programs
and
data.
Extended memory -
memory
from
1 to
16
megabyte
memory
address
(lOOOOOH-FFFFFFH).
This
area
can
be
used
by
the
A T
or
AT
compatible
to
store
data
and
programs. DOS
does
not
recognize
this
memory
space,
but
certain
programs
can
use this
memory
space
(notably
the
EDISK.syS
RAM
disk utility
and
the
OS/2 disk
operating
system).
Expanded memory -
memory
(specification developed
by
a
joint
project
of
Lotus,
Intel
and
Microsoft)
that
can
be
ac-
cessed
by
specially-modified
software
in
order
to
overcome
the
DOS-imposed
OK-640K
(OOOOOH-9FFFFH)
memory
address limit
for
program
data.
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