Programming 29
3 • Programming
Basic
target
write
and
read
operations
of
the
RFM
‐
5565
require
little
or
no
software.
The
board
powers
up
in
a
functional
mode.
The
user
will
need
to
access
the
PCI
Configuration
registers
(Base
Address
Register
0,
1,
2
and
3)
to
learn
where
the
system
BIOS
has
located
the
other
register
sets
and
the
Reflective
Memory.
The
location
of
the
register
sets
and
the
Reflective
Memory
varies
from
system
to
system,
and
can
even
vary
from
slot
to
slot
within
a
system.
For
operations
beyond
the
basic
setup,
such
as
enabling
or
disabling
interrupts
or
performing
DMA
cycles,
the
user
must
know
the
specific
bit
assignments
of
the
registers
within
the
three
register
sets.
That
information
is
provided
in
this
chapter.
The
three
register
sets
are:
•
PCI
Configuration
Registers
•
Local
Configuration
Registers
•
RFM
Control
and
Status
Registers
