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Hitachi MP-1802 Technical Manual page 27

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( D o w n 2 ) t o D o w n I N a n d U p O U T , D o w n O U T t o m a k e A M P I N . )
r1
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C I R C U I T E X P L A N A T I O N
7 - 1
S t r u c t u r e
T h e L e v e L - 3 m i n i f l o p p y
d i s k
s y s t e m c o n s i s t s
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d i s k
u n i t
M P - 3 5 5 0 a n d t h e m i n i f l o p p y
d i s k
c a r d M P - 1 8 0 2 .
T h e M D D s ( m i n i
d i s k
d r i v e
u n i t s ) ,
a p o w e r u n i t
a n d a V F O
s e p a y a t o r a r e i - n c o r p o r a t e d i n t h e M P - 3 5 5 0 .
T h e M P - 1 8 0 2 i n c l u d e s
a n I C 6 1 S F D C ( f l o p p y
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a n d M D D i n t e r f a c e c i - r c u i t ,
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f t t r a n s f e r s t h e i n t e r f a c e
s i g n a l s
b e t w e e n t h e L e v e I - 3
a n d m i n i f l o p p y
d i s k
u n i t
M P - 3 5 5 0 .
T h e b a s i c d r i v e
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i n E P R O M ( I C 6 1 7 ) o n t h e M P - 1 8 0 2
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i s
o n t h e 0 S d i s k .
F i g .
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