Bally 5000 Plus, Руководство пользователя

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1 4 . GLOSSARY
A
AS--add r e s s s t robe . S i gn a l i n d i c a t i ng a va l i d a d d r e ss i n on t he a d d r e s s l i ne .
act i ve
LOW
o r
H I GH-- P r o p e r l og i c l e ve l t o m a k e a p i n f un c t i on a s r e q u i r ed by t he
c h i p
adj acent por t s--2 por t s w i t h 2 c h i ps whe r e 1 t r a ns f e r s l owe r d a t a b y t e s and t he
o t h e r t r an s f e r s uppe r d a t a b y t e s a n d toge t he r t he y t r a n s f e r d a t a
wo r d s
ASC I I --Ame r l ca n S t an d a r d Code f o r I n f o r ma t i on I n t e r c h ange
asynchronous--Ope r a t i o ns t h a t s t a r t a new ope r a t i on i mmed i a t e l y upon comp l e t i on
o f a cur r e n t one . T he s e o pe r a t i on s a r e no t t i me d b y a s y s t em
c l ock . T h e 68000 m i c r o p r ocessor needs DTACK t o s i gna l t he
comp l e t i on o f t he d a t a f l ow f r om a 68000 dev i ce .
a t tendant ( hand ) pa i d j ackpot--A I I o r a n y por t i on o f t h e co i ns won t h a t r e qu i r e
a n a t t e n d a n t t o pay t he p l a y e r .
autovector numbe r --An 8 b i t numbe r gene r a t ed i n t e r na l l y b y t he 68000 m i c r o­
p r ocessor . I t i s d e t e r m i ned b y t h e l e ve l o f i n t e r r u p t f r om a
6800 dev i ce o r AC f a i I . T h e r e t u r ne d VPA s i g na l a c k now l edges
t he number a s an autovec t o r .
B
BAUD r a t e--The s i g na l i ng r a t e a t wh i c h d a t a i s t r ansm i t t e d a n d r ece i ve d .
b l -d l r e c t l ona l buf fer ch i p--A c h i p used a s a r e a d a n d w r i t e commun i c a t i on
I i nk
for por t s o f f t he I /O boa r d
B i F ET--b i -po l a r f i e l d e f f e c t t r a n s i s t o r t ec h no l ogy ( S i MO S ) W i t h l og i c l e ve l s 5V
on i np u t , t he h i g h vo l t age out put can b e con t r o l l ed .
B I MDS--b l -po l a r me t a l o x i de sem i conduc t o r ( S i F ET ) W i t h l og i c l e v e l s 5V on
I nput , t he h i g h vo l t a ge ou t pu t can be con t r o l l ed .
b i t--An abb r e v i a t i on o f b i na r y d i g i t . I n so f t wa r e , a un i t o f i n f o r m a t i on
r e p r esen t e d b y e i t h e r a z e r o o r a one . I n da t a t r a n sm i s s i on i n e l ec t r on i c
compu t e r s , ( 1 ) a s i ng l e occu r r ence o f a c h a r a c t e r i n a l a nguage emp l oy i ng
e x a c t l y 2 k i nd s o f c h a r ac t e r s ( 2 ) a un i t o f s t o r age c a p a c i t y o f a s t o r age
dev i ce w i t h l og a r i t hm to t h e base 2 o f t h e num b e r of p o s s i b l e s t a t e s o f t h e
dev i ce .
1 4-1