Intel 80386

LOCAL BUS INTERFACE
A ;t
L
D31-D24 MEMORY CS
J
... II"
to.
L
D23-D16 MEMORYCS
r
...
80386
A
"
F-
D15-D8
MEMORY CS
...
y
.A
'"
~
D7-DO
MEMORY CS
...
y
l
BEO#
BE1#
BE2#
BE3#
Figure 3·5. Consecutive Bytes in Hardware Implementation
BED
BEl
BE2
BE3
BED
BEl
BE2
BE3
BED
BYTE
ADDRESS
0
1
2
3
4
5
6
7
8
-
-
-
WORD
ADDRESS
0
0
2
2
4
4
6
6
8
-
-
-
131 24123 16115 81
7
BE3# BE2# BE1#
DWORD
ADDRESS
0
0
0
0
4
4
4
4
8
-
-
-
BEO#
01
Figure 3·6. Address, Data Bus, and Byte Enables for 32·Bit Bus
3-9
G30107
G30107