Bally 5000 Plus, Manual

Page: 348 / 388

1 4 .
GLOSSARY
r e f l ec t i ve zone--The
a r e a whe r e a f l ag causes t he em i t t e r to r e f l e c t b a c k to t he
def l e c t o r .
ROM--Read-On l y Memo r y .
s e t I n t o t he ROM
l ay e r p l aced on t o
u p t o 64 , 000 b i t s
T h e b i na r y on-o f f b i t pa t t e r n con t a i n i ng t he p r og r am i s
dur i ng manu f a c t u r i ng , usua l l y a s p a r t o f t he l a s t me t a l
t he I n t eg r a t ed c i r cu i t . ROM I s not e r a s a b l e . Can con t a i n
o f d a t a wh i c h se r ve a s t he C P U ' s I ns t r u c t i on s .
R/W--Read/Wr l t e . S i gn a l def i n i ng t he d a t a bus t r an s f e r a s a r e a d o r wr i t e cyc l e
on t he M P U boa r d .
s
SDS--S l o t D a t a S y s t em . On- l i ne s l o t mon i to r i ng and a ccoun t i ng s y s t em . SOS
mon i t o r s , measu r e s , r eco r d s , and r e po r t s a l I p h a s e s of s l o t a c t i v i t y as
t hey occur on t he c a s i no f l oo r .
se l ector/ I n t e r rupt ( I ACK4 ) --A c h i p t h a t a l l ows some c h i ps t o be used a s 6800
dev i ce s and i s an i n t e r r up t con t r o l l e r for t he 68000
m i c r o p r ocessor I n t e r r up t c y c l e .
sensor--A
g r oup o f op t i ca l sw i t c h e s ope r a t i ng t oge t he r t o p r o v i de t he
m i c r op rocessor w i t h I n fo r m a t i on on a ce r t a i n i nput .
s t a t e --Des l gn a t e s a pa r t i cu l a r mode o f ope r a t i on .
s t robe--A
s i gna l w i t h a s ho r t pu l se dur a t i on .
synchronous--Ope r a t l on s t h a t a r e based on t he sys t em c l ock for t i m i ng . T h e 6800
c h i p needs t he E s i gna l f o r t i m i ng .
system bus--Conduc t o r s t r a n s f e r r i ng a d d r e s s , da t a and con t r o l s i g na l s needed by
t he m i c r o p r ocessor .
u
UDS--uppe r da t a s t robe . S i gna l t h a t con t r o l s t he f l ow o f da t a on t he da t a bus
us i ng d a t a l i ne s , D8-0 1 5 .
user vector n
umbe
r
--
A
n 8 b i t numb e r gene r a t ed b y t h e i n t e r r up t i ng 68000 dev i ce
and r e t u r ne d t o t he 68000 m i c r o p r ocessor o v e r da t a l i nes ,
0 0-07 _
1 4-5