Bally 5000 Plus, Manual

Page: 264 / 388

9 . R E EL CONTROL BOARD
Connec t or Loc a t i on a n d Use
J 1
J 1 i s a n 8 p i n conne c t o r supp l i n g
powe r t o t h e boa r d . T h e +5 VDC I s
for t he 5 V l og i c ( Vcc ) . The + 1 2
VDC a n d +24 VDC r un t he s t epper
mo t o r s .
J 2
J 2 I s a 3 4 p i n connec t o r p r ov i d i ng
( 1 ) 1 6 b i t s o f d a t a bus l i ne s ,
( 2 )
r e a d con t ro l l i ne s t o t r an s f e r d a t a
ove r t he d a t a bus f rom t he r ee l
o p t i c s boa r d t o t he MPU a n d ( 3 )
wr i t e con t ro l l i ne s t o t r an s f e r
d a t a o v e r t he d a t a b u s t o t h e
s t e pper mo t o r s . E i t he r a n uppe r
d a t a b y t e ( 8 b i t s ) o r a l owe r
d a t a
b y t e ( 8 b i t s ) i s a s s i gned t o e a c h
r e e I .
9-6
NOT E S