Bally 5000 Plus, Manual

Page: 100 / 388

C i r cu i t Descr i pt i on ( con t ' d )
Read o r Wr i t e d a t a wor d s
U 1 3/ U 1 4 a n d U 1 6/U 1 7 oper a t e a s a
pa i r . To r e a d f rom o r wr i t e t o t he
da t a wo r ds over t he d a t a l i ne s ( 00-
0 1 5 ) ,
t h i s p a i r needs ( 1 ) e ven
add r esses ( 2 ) c h i p s e l ec t s i gna l s
and ( 3 ) e i t he r t he OEl and OEH
s i gna l s s i mu l t a neous l y o r t he WEl
and WEH s i gna l s s i mu l t aneous l y .
o
A ' 5
.... .
•
C S
ETAIL 'A'
U 1 3 A
/
0 7 ' 9
U 1 4 A
06 , e
0 5 1 7
0 4 ' 6
0 3 '5
0 2 '3
' 2
DO I I
A • •
2 6
2
B
2 '
2.
25
3
4
5
6
7
•
9
' 0
D E L
W E L
A . 3
A ' 2
A l l
• • 0
A 9
A .
A 7
A 6
A5
A 4
A 3
A2
A '
RAM D I AGRAM
NOTE:
U I 3 A / U I 4 A
a
U I 6 A / U I 7 A A R E
. 6 0 0 C E N T E R S
SPAC I N G R A M A N D
R E P L A C E
U I 3/ U I 4
a
U I6 / U I 7
W H I C H A R E . 300
C E N T E R S SPACING
R A M .
F i g . 3- 1 5
o
NOT E S
. A
.. .
• 26
CS 2 A . 3
ETAI L
' B '
2 ' A l l
2'
A ' O
U 1 6 A
/
2 5 A 9
0 . 5 ' 9
U 1 7 A
3 A e
0 1 ' ,
.
4 A 7
0 ' 3 1 7
5 A 6
0 , 2 '6 6 A 5
7 A 4
•
. 3
0 9 ' 2 9 ' 2
D e
I I
10 • •
D E "
W E H
3 . MPU BOARD
3-43