65
09/18/00 Rev 1.1
123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567
123456789012345678901234567890121234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121234567
PI7C7100
3-Port PCI Bridge
ADVANCE INFORMATION
13.2.34 Config Register 1: Primary Prefetchable Memory Base Register (Read/Write, bit 15-0; offset 44h)
This register is implemented but not being used internally.This register defines the base address of the primary
prefetchable memory-mapped address range for forwarding the cycle through the bridge. The upper twelve bits
corresponding to address bits [31:20] are read/write. The upper twelve bits are reset to 0000h. The lower four bits are read
only and are set to 0h. The lower 20 address bits (19:0) are assumed to be 00000h.
13.2.35 Config Register 2: Primary Prefetchable Memory Base Register (Read/Write, bit 15-0; offset 44h)
This register is implemented but not being used internally. The upper twelve bits corresponding to address bits [31:20]
are read/write. The upper twelve bits are reset to 0000h. The lower four bits are read only and are set to 0h.
13.2.36 Config Register 1: Primary Prefetchable Memory Limit Register (Read/Write, bit 31-16; offset 44h)
This register is implemented but not being used internally.This register defines the upper limit address of the primary
prefetchable memory-mapped address range for forwarding the cycle through the bridge. The upper twelve bits
corresponding to address bits [31:20] are read/write. The upper twelve bits are reset to 0000h. The lower four bits are read
only and are set to 0h. The lower 20 address bits (19:0) are assumed to be FFFFFh.
13.2.37 Config Register 2: Primary Prefetchable Memory Limit Register (Read/Write, bit 31-16; offset 44h)
This register is implemented but not being used internally. The upper twelve bits corresponding to address bits [31:20]
are read/write. The upper twelve bits are reset to 0000h. The lower four bits are read only and are set to 0h.
t
i
B
n
o
i
t
c
n
u
F
e
p
y
T
n
o
i
t
p
i
r
c
s
e
D
7
d
e
v
r
e
s
e
R
O
/
R
0
o
t
t
e
s
e
R
6
-
d
a
e
r
d
e
y
a
l
e
D
m
o
r
f
a
t
a
d
o
n
t
e
g
r
a
t
W
/
R
y
n
a
r
e
f
s
n
a
r
t
o
t
e
l
b
a
n
u
s
i
t
i
n
e
h
w
#
R
R
E
S
_
P
t
r
e
s
s
a
o
t
0
0
1
7
C
7
I
P
f
o
y
t
il
i
b
a
s
l
o
r
t
n
o
C
2
r
e
t
f
a
t
e
g
r
a
t
e
h
t
m
o
r
f
a
t
a
d
d
a
e
r
4
2
t
n
e
v
e
s
i
h
t
f
i
d
e
t
r
e
s
s
a
s
i
#
R
R
E
S
_
P
.
s
t
p
m
e
t
t
a
.
t
e
s
s
i
r
e
t
s
i
g
e
r
d
n
a
m
m
o
c
e
h
t
n
i
t
i
b
e
l
b
a
n
e
#
R
R
E
S
d
n
a
0
s
i
t
i
b
s
i
h
t
n
e
h
w
s
r
u
c
c
o
0
o
t
t
e
s
e
R
5
e
t
i
r
w
d
e
y
a
l
e
D
r
e
v
il
e
d
n
o
n
W
/
R
r
e
f
s
n
a
r
t
o
t
e
l
b
a
n
u
s
i
t
i
n
e
h
w
#
R
R
E
S
_
P
t
r
e
s
s
a
o
t
0
0
1
7
C
7
I
P
f
o
y
t
il
i
b
a
s
l
o
r
t
n
o
C
2
r
e
t
f
a
a
t
a
d
e
t
i
r
w
d
e
y
a
l
e
d
4
2
s
r
u
c
c
o
t
n
e
v
e
s
i
h
t
f
i
d
e
t
r
e
s
s
a
s
i
#
R
R
E
S
_
P
.
s
t
p
m
e
t
t
a
.
t
e
s
s
i
r
e
t
s
i
g
e
r
d
n
a
m
m
o
c
e
h
t
n
i
t
i
b
e
l
b
a
n
e
#
R
R
E
S
d
n
a
0
s
i
t
i
b
s
i
h
t
n
e
h
w
0
o
t
t
e
s
e
R
4
t
r
o
b
a
r
e
t
s
a
M
d
e
t
s
o
p
n
o
e
t
i
r
w
W
/
R
t
r
o
b
a
r
e
t
s
a
m
a
s
e
v
i
e
c
e
r
t
i
n
e
h
w
#
R
R
E
S
_
P
t
r
e
s
s
a
o
t
0
0
1
7
C
7
I
P
f
o
y
t
il
i
b
a
s
l
o
r
t
n
o
C
t
n
e
v
e
s
i
h
t
f
i
d
e
t
r
e
s
s
a
s
i
#
R
R
E
S
_
P
.
a
t
a
d
e
t
i
r
w
d
e
t
s
o
p
r
e
v
il
e
d
o
t
g
n
i
t
p
m
e
t
t
a
n
e
h
w
.
t
e
s
s
i
r
e
t
s
i
g
e
r
d
n
a
m
m
o
c
e
h
t
n
i
t
i
b
e
l
b
a
n
e
#
R
R
E
S
d
n
a
0
s
i
t
i
b
s
i
h
t
n
e
h
w
s
r
u
c
c
o
0
o
t
t
e
s
e
R
3
t
r
o
b
a
t
e
g
r
a
T
d
e
t
s
o
p
g
n
i
r
u
d
e
t
i
r
w
W
/
R
t
r
o
b
a
t
e
g
r
a
t
a
s
e
v
i
e
c
e
r
t
i
n
e
h
w
#
R
R
E
S
_
P
t
r
e
s
s
a
o
t
0
0
1
7
C
7
I
P
f
o
y
t
il
i
b
a
s
l
o
r
t
n
o
C
t
n
e
v
e
s
i
h
t
f
i
d
e
t
r
e
s
s
a
s
i
#
R
R
E
S
_
P
.
a
t
a
d
e
t
i
r
w
d
e
t
s
o
p
r
e
v
il
e
d
o
t
g
n
i
t
p
m
e
t
t
a
n
e
h
w
.
t
e
s
s
i
r
e
t
s
i
g
e
r
d
n
a
m
m
o
c
e
h
t
n
i
t
i
b
e
l
b
a
n
e
#
R
R
E
S
d
n
a
0
s
i
t
i
b
s
i
h
t
n
e
h
w
s
r
u
c
c
o
0
o
t
t
e
s
e
R
2
e
t
i
r
w
d
e
t
s
o
P
y
r
e
v
il
e
d
-
n
o
n
W
/
R
d
e
t
s
o
p
r
e
v
il
e
d
o
t
e
l
b
a
n
u
s
i
t
i
n
e
h
w
#
R
R
E
S
_
P
t
r
e
s
s
a
o
t
0
0
1
7
C
7
I
P
f
o
y
t
il
i
b
a
s
l
o
r
t
n
o
C
2
r
e
t
f
a
a
t
a
d
e
t
i
r
w
4
2
t
i
b
s
i
h
t
n
e
h
w
s
r
u
c
c
o
t
n
e
v
e
s
i
h
t
f
i
d
e
t
r
e
s
s
a
s
i
#
R
R
E
S
_
P
.
s
t
p
m
e
t
t
a
.
t
e
s
s
i
r
e
t
s
i
g
e
r
d
n
a
m
m
o
c
e
h
t
n
i
t
i
b
e
l
b
a
n
e
#
R
R
E
S
d
n
a
0
s
i
0
o
t
t
e
s
e
R
1
e
t
i
r
w
d
e
t
s
o
P
r
o
r
r
e
y
t
i
r
a
p
W
/
R
n
o
d
e
t
c
e
t
e
d
s
i
r
o
r
r
e
y
t
i
r
a
p
a
n
e
h
w
#
R
R
E
S
_
P
t
r
e
s
s
a
o
t
0
0
1
7
C
7
I
P
f
o
y
t
il
i
b
a
s
l
o
r
t
n
o
C
t
n
e
v
e
s
i
h
t
f
i
d
e
t
r
e
s
s
a
s
i
#
R
R
E
S
_
P
.
n
o
i
t
c
a
s
n
a
r
t
e
t
i
r
w
d
e
t
s
o
p
a
g
n
i
r
u
d
s
u
b
t
e
g
r
a
t
e
h
t
.
t
e
s
s
i
r
e
t
s
i
g
e
r
d
n
a
m
m
o
c
e
h
t
n
i
t
i
b
e
l
b
a
n
e
#
R
R
E
S
d
n
a
0
s
i
t
i
b
s
i
h
t
n
e
h
w
s
r
u
c
c
o
0
o
t
t
e
s
e
R
0
d
e
v
r
e
s
e
R
O
/
R
0
o
t
t
e
s
e
R
13.2.38 Config Register 1 or 2: P_SERR# Event Disable Register (bit 7-0; offset 64h)
Note: R/W - Read/Write, R/O - Read Only, R/WC - Read/ Write 1 to clear.