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CPU BOARD
sheet 8 of 25
3-1 4
D
c
A
REV
-
8
D E S C R I P T I ON OF CHANGE
E C N NO
DATE
New Par t R e l e a s e
3 8 0 3 0
B - 5 - 9 4
WAVE ADDR B U S
- WRAS O
- WCAS O
- WWR O l
- WO E O
- WRAS O
8
7
U 7 S
4 4 C l 0 0 0
WA 1 9
s A 9
WA l B l S
A B DQ 4
1 9
WAl 7
1 4
A7
DQ 3 l B
WAl 6
1 3
A 6 DQ2 2
WAl S
1 2
AS DQ l l
WAl 4
1 1
A 4
WAl 3 9
A3
WA 1 2
8
A2
WA l l
7
A l
WAl 0
6
A O
'R"AS
1 7
CAS
w
G
U 7 1
4 4 C l 0 0 0
WA0 9
s A9
WA0 8
1 5 AB
DQ 4
1 9
WA 0 7
1 4
A 7 DQ 3
1 8
WA O 6 1 3
A 6 DQ2 2
WAO S
1 2
AS
DQ l l
WA 0 4
1 1 A4
WA O 3 9
A 3
WA 0 2
8
A2
WA O 1
7
A l
WA O 0 6
A O
RAS
CAS
3 -
G
7
6 5
WAVE
RAM
U 7 4
4 4 C l 0 0 0
WAl 9 5
A 9
WD3 1 WAl B
l S
AB DQ 4
1 9
WD 2 7
WD3 0 WD2 WAl 7
1 4
A7 DQ 3
1 8
WD2 9
WAl 6
1 3
A 6 DQ2 2
WD2
WD2 8 WAl S
1 2
A S D Q l l
WD2 4
WAl 4
1 1
A 4
WAl 3
9 A3
WA 1 2
8
A2
WAl 1
7
Al
WAl 0
6
A O
'R"AS
1 7
CAS
3
w
G
U 7 0
4 4 C l 0 0 0
A 9
WD1 5
WA O B 1 5
AB DQ 4
1 9
WD l l
WD 1 4 WA 0 7
1 4
A7 DQ 3
l B WDl 0
WD 1 3 WA 0 6
1 3
A 6 DQ2 2
WD 0 9
W D 1 2 WA O S
1 2
AS DQl l
WDO B
WAO 4
1 1
A 4
WAO 3
9
A3
WA 0 2
8
A2
WA O l
7
A l
WA O O
6
A O
RAS
1 7
w
G
6
5
4
3 2
D
U 7 3 U 7 6
4 4 C l 0 0 0 4 4 C l 0 0 0
WA 1 9
s A 9
WA l 9 5
A 9
WA l B
l S
A B
1 9
WD2 3 WA l B
1 5
A B D Q 4
1 9
WD 1 9
DQ 4
WD 2 2 WDl B
WAl 7 1 4
A7 DQ 3
1 8 1 4
A 7 DQ3 1 8
WAl 6 1 3
A 6 DQ 2 2
WD2 l WAl 6
1 3
A 6 DQ 2 2
WDl 7
WAl S
1 2
A S DQ l l
WD2 0 WA l S
1 2
A S
DQl l
WDl 6
WA 1 4
1 1
WA 1 4
1 1
A 4 A 4
WA 1 3
9
A 3
WA 1 3
9
A 3
WA 1 2
8 A2
WA 1 2
8
A2
WA l l
7
A l
WA l l
7
A l
WA l O
6
A O
WA l O 6
A O
RAS
RAS
1 7 1
CAS
3
w w
c
G
WAVE DATA B U S
U 6 9 U 7 2
4 4 C l 0 0 0 4 4 C l 0 0 0
WA 0 9
s
A 9
WA 0 9
5
A 9
WA 0 8
l S
A B DQ 4
1 9
WD 0 7 WA 0 8
1 5 A S
DQ4
1 9
WDO 3
WA 0 7 1 4
A 7 DQ 3
l B WD 0 6
WA 0 7
1 4
A 7 DQ3
1 8
WD 0 2
WA 0 6
1 3
A 6 DQ 2 2
WD O S WA 0 6
1 3
A 6 DQ 2 2
WD O 1
WA O S
1 2
AS
DQ l l
WD 0 4 WA O S
1 2
A S
DQl l
WDO 0
WA 0 4
1 1 A4 1 1 A 4
0 3
9
A3
WA 0 3
9
A 3
WA 0 2
8
A2
WA 0 2
8
A 2
WA O l
7
A l
WA O l
7
A l
0 6
A O
WA O O 6
A O
RA S RAS
1 7
CAS
1 7
CAS
3
w
3
w
G
A
THE INFORMATION CONTAINED ON T H I S DRAWING IS C O N F I D E N T I AL PROPERTY OF THE COMPANY .
IT MAY NOT BE U S ED OR DI S C L O S E D TO OTHERS WITHOUT WRITTEN P E RM I S S I ON .
PROJ _ ENGR _ F I R S T PROJECT NUMBER
W I L L I A M S E L EC TR O N I C S GAME S , I NC .
M. L o f f r edo
4 0 0 3 3
M I DWAY MANUFACTURING C OMPANY
OWN
B Y DATE
NAME
VR4 . P 0 8
ML
9 / 1 5 / 9 1
F I R S T USAGE
V - UN I T S C H E MAT I C
CHECR E D BY DATE
A - 1 9 2 3 3 - 4 0 0 3 3
0 8 / 0 5 / 9 4 1 5 : 1 2 : 3 0
DATE
PART NO .
1 6 - 9 8 7 3
REV
APPROVAL
O B 2 5
-
S H EET OF
4 3
2 1