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Hitachi MP-1802 Technical Manual page 62

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2 a n d L 1 2 0
1 l n , L 1 0 1 ,
i s t u r n e d
e s s m o t o r
c 1 8 1 , C 1 8
c 1 0 2
c ' 1
l a m p D 2 0 B
D C b r u s h l
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lv
L 1 2 2 f o r m t h e
L 1 O Z a r e t h e D C
o n b y + 5 V .
T h e
w h i c h u s e s h a l l
Fffiiln.
F i g . 7 . 3 7
P o w e r C i r c u i t , P o w e r L a m p , D C F a n
A C p o w e r
l i n e
f i l t e r .
l i n e
f i l f e r .
T h e p o w e r
D C f a n
f o r
c o o l i n g
i s
a
e f f e c t
o u t e r
r o t o r
m e t h o d .
ACF.
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o o l
I
7 - 1 5
O o e r a t i o n
S e o u e n c e w h e n D I S K B A S I C i s
A c t i q l t e d
R e f e r e n c e )
T h i s i s
d e t a i l e d
i n F i g . 7 . 3 8 b e l o w .
P o w e r s w i t c h 0 N
R e a d D i s k B a s i c t o
R A M A d d r e s s & H / * / * 0 0
R e a d F D O S b y
& H 4 l u 0 0 S o f t w a r e
C P U v e c t o r
a d d r e s s
g e n e r a t i o n
( t l
m a s k R O M )
( B o o t R O M )
( n a u S o f t w a r e R e a d
b y B o o t R O M )
( n a u , R o M )
F i g . 7 . 3 8
O p e r a t i o n
S e q u e n c e w h e n D i s k
S T A R T
V e c t o r i n s
P c H + ( r F r E )
P C L E ( F F F F )
I n i t i a l i s e
D i s k B a s i c
L o a d e r R e a d i n
I n i t i a l i s e
. . . / 5 8
B a s i c i s
A c t i v a t e d

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