Bridgeboard Expansion
3-3
Bridgeboard Expansion
Three
of
the
Amiga
bus
expansion slots
are
in
line
with
PC/AT
compatible slot connectors, enabling
the
use
of
the
Commodore
Bridgeboard
PC
emulator
boards
and
PC expansion boards
in
the
Amiga. A Bridgeboard
is
a fully functional PC compatible
computer
with
its
own
microprocessor, memory,
and
the
circuitry
needed
to
link
the
PC
and
Amiga systems. Since
the
Amiga
is
multitasking,
an
Amiga
equipped
with
a Bridgeboard
can
run
DOS
and
Windows
programs
at
the
same
time
as
Amiga programs.
A
Bridgeboard
is
a full-length
board
that
occupies
both
the
lOO-pin
Amiga
bus
connector
and
the
98-pin PC/AT connectors
that
are
in
line
with
it.
With
a Bridgeboard
installed,
the
other
two slots
with
PC/AT connectors
can
accept most
standard
PCIXT
and
PC/AT drive
controllers, VGAlSVGA video
adapters,
110
boards,
and
other
options for
the
Bridgeboard's use.
With
a Bridgeboard installed,
the
Amiga
expansion slots
that
are
in
line
with
unoccupied PC/AT slots
can
still
be
used
by Amiga
expansion
boards.
Video Expansion
The
Amiga
video expansion slot accommodates
internal
installation
of
graphics
and
video options.
Using
this
slot keeps
all
video
circuitry
in
the
metal
housing of
the
Amiga's
main
unit,
helping
to
minimize
RF
interference problems.
The
video slot
is
in
line
with
one Amiga
bus
expansion slot. This
allows a video
expansion
board
to incorporate,
or
be easily
connected to, a
standard
Zorro IIIIII
expansion
board.
This
adds
versatility,
while
enabling
high-speed
data
transfer
between
the
Amiga's
main
memory
and
a graphics
output
device.
The
analog
RGB
output
of
the
Amiga
is
compatible
with
worldwide
television
standards
(both
North
American
NTSC
and
European
PAL).
This
makes
the
Amiga
particularly
well
suited
to video
and
multimedia
options,
such
as
a genlock, digitizer, composite encoder,
or
character
generator.
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