C i r cu i t Desc r i p t i on ( con t ' d )
Decode B i -d i r e c t i ona l Por t
T h e decod i ng P R OM ( G 1 ) decodes
t he
b l -d i r e c t l ona l
por t s .
T h e MPU
boa r d t he n r e a d s d a t a f r om
or
wr i t e s d a t a t o t he por t s I n b y t es
or wo r ds .
To decode t h e b i -d i r ec t i ona l
r ee l
me c h a n i sm por t s ( 6 , 7 , 8 , 9 , B ) ,
G 1
needs
( 1 ) o d d a n d / o r even a d d r e s s
s i gna I
f r om A 1 -A3
( 2 )
decoded o d d
and/or e v e n a d d r e s s
( 3 )
I /ODTACK
sent to t h e M P U boa r d a n d ( 4 ) WR I T E
s i gna I .
An a c t i ve H I GH WR I T E s i gna l ( P 1 p i n
1 4A ) ,
f r om
t he MPU boa r d R / W
s i gn a l ,
goe s t o G 1 p i n 1 0 t o r e a d
d a t a b y t e s o r wo r d s .
An
a c t i ve L OW WR I T E s i gna l goes t o
G 1
p i n 1 0 t o w r i t e d a t a b y t e s o r
wo r ds .
G 1
decodes an a d d r e s s a n d sends a
se l ec t
(S EC)
s i g na l
t o t h e
b i
d i r e c t i ona l
buf f e r
c h i p
wh i c h
con t r o l s d a t a t r a n s f e r t o a
r ee l
mec ha n i sm por t o n t he r ee l
con t r o l
boa r d .
G 1 p i n
S ECf
G 1 p i n
2
Po r t
7 , 9 , B E 3 p i n 1 9
6 , 8
E 5 p i n 1 9
To decode
t he P i ck 3 po r t D , G 1
needs
( 1 ) o d d a d d r e ss s i gna l
f r om
A 1 -A3
( 2 ) decoded odd a d d r e s s
( 3 )
-
_
.-
.
-
.. _--
I /ODTACK sent ( 4 ) a c t i ve LOW WR I T E
s i g na l
t o G 1 p i n 1 0 t o wr i t e
da t a
b y t e s a n d ( 5 ) D S O s i gna l t o G 1 p i n
1 4 to use t h e l owe r d a t a l i nes ( D O
D7 ) .
4 . I /O BOARD
-
--
---
NOT E S
4- 1 3
Содержание 5000 Plus
Страница 18: ...2 TEST EQU I P ENT Th i s i l l ust r a tion w i I I be supp l i ed at a l a t e r da t e F i g 2 1 2 5...
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Страница 125: ...3 MPU BOARD Troub l eshoot i ng cont d CLOCK D I AGRAM Vee 3 68...
Страница 149: ...3 MPU BOARD Troub l eshoot i ng cont d 3 92 LOW VOLTAGE D I AGRAM Vee R 6 12 1 10K C l l T M V 16V R4 O K R 7 CR3 v...
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Страница 242: ...HOPPER CONTROL BOARD Boar d Assemb l y AS 3556 1 3 o 0 o Q5 r 7 4...
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Страница 283: ...R E E L 1 MOTOR POWER FLOWCHART B A D R E E L 1 M OTOR P OW E R FA U LT I S O LA T I O N 9 R E E L CONTROL BOARD 9 25...
Страница 284: ...9 REEL CONTROL BOARD 9 26 REEL 2 MOTOR POWER FLOWCHART BAD R E E L 2 MOTOR P O W E R FAU LT I S O L A T I O N...
Страница 285: ...R E E L 3 MOTOR POWER FLOWCHART BAD R E E L 3 MOTOR POW E R F A U LT I S O L AT I O N 9 R E E L CONTROL BOARD 9 27...
Страница 286: ...9 REEL CONTROL BOARD 9 28 REEL 4 MOTOR POWER FLOWCHART REEL 4 M OTOR POWE R F A U LT I S O L A T I O N...
Страница 287: ...REEL 5 MOTOR POWER FLOWCHART GOOD R E E L 5 MOTOR POW E R F A U LT I S O L A T I O N 9 R EEL CONTROL BOARD III 9 29...
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Страница 361: ...1 5 APPEND I CES APPEND I X 4 Co i n Mechan i sm I nc 1 5 6...
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Страница 383: ...APPEND I X 6 Ser v i ce Su i l e t i ns 1 5 APP END I CES 1 5 1 2...
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