Amiga A4000 - Page 34

Chapter
3
Before Expanding Your
System
This
chapter
summarizes
the
internal
expansion options for
the
Amiga,
and
illustrates
general option
installation
procedures.
For
detailed
information, see
the
appropriate
chapter
in
this
manual
and
the
installation
manual
for
the
option you
are
installing.
The
Amiga
can
accommodate several types
of
internal
expansion
options:
•
•
•
•
•
•
•
Memory
expansion
Amiga
bus
(Zorro III1Zorro
11)
expansion
boards
Processor modules
Bridgeboard
PC
emulator
boards
Video
expansion
boards
3.5-inch drives
5.25-inch drives
Memory Expansion
The
amount
of
random
access memory (RAM)
in
the
A4000
is
expandable
to 18 megabytes (18 MB)
on
the
motherboard
using
single
inline
memory
module (SIMM) sockets. All
motherboard
RAM
is
32-bit
memory
directly
addressable
by
the
operating
system.
The Amiga's
memory
consists of Chip RAM
and
Fast
RAM. Chip
RAM
is
memory
shared
by
the
microprocessor
and
the
Amiga's
custom chips.
Fast
RAM
is
memory
used
exclusively
by
the