Table
3-1
Window
Attribute
Summary
Attribute
Description
Window
Status
Window
is
open/closed/faulted
Subr ange Base
Address
Start
of
windowed
subr
ange
in
the
PS
Subrange
Size
Length
of
windowed
subrange
in
the
PS
Obj
ect
Reference
Obj
ect
Selector
for
windowed 432
obj
ect
Base
Displacement Displacement
in
bytes
into
windowed 432
object
Direction
Read/write
permission
for
windowed
object.
When
the
window
is
being
opened
this
attribute
is
the
perm1ss1on
requested
by
the
I/O
controller.
After
the
window
has
been
opened
this
attribute
is
the
permission
that
has
been
granted.
Transfer
Status
Transfer
in
progress/terminated/faulted
M:x1e
Window
0:
random/block
node
Window
1 :
memory/interconnect
mode
Window
2-4:
always
in
randan
node
Overlay
Windowed
subrange
does/does
not
overlay
metrory
Block
lobde
Attribute
Description
(applies
only
to
window
0)
Byte
Count Count
of
the
number
of
bytes
to
be
transferred
minus
one.
Note:
In
block
transfer
mode,
the
base
displacement
of
window 0
specifies
the
initial
address
within
the
windowed
object
fran
which
consecutive
information
transfer
will
begin.
3-3