3 . MPU BOARD
C i r cu i t Descr i p t i on ( con t ' d )
Se l e c t o r / I n t e r r up t ( I ACK4 )
The se l e c t o r / I n t e r r up t c i r cu i t a t
U 1 01 func t i ons ( 1 ) a s a p a r t o f t he
c h i p se l e c t i on b y a l l ow i ng t he r e a l
t i me c l ock ,
p e r i p h e r a l
I n t e r r u p t
adap t e r
( P I A ) ,
and
v e r s a t l i e
I n t e r r up t a d a p t e r ( V I A ) t o be used
as
6800 c h i p s
and
( 2 ) a s
an
I n t e r r up t
con t r o l l e r
f o r
t he
m i c r o p r ocessor i n t e r r u p t cyc I e .
1 . As p a r t o f c h i p se l ec t i on :
U7 sends a c h i p se l ec t s i gn a l t o
t h e se l e c t o r / i n t e r r up t
( U 1 0 1 ) .
U 1 0 1
r ecogn i ze s t he s i gna l
and
sends a v a l i d pe r i p h e r a l a d d r e s s
( VPA )
s i gna l
( U 1 0 1 p i n 1 7 )
t o
t he m i c r op r ocessor ( U 1 p i n
2 1 ) .
The
m i c r op r ocessor
r ecogn i ze s
t he
pa r t i cu l a r 6800 c h i p .
U 1
p i n 1 9 sends a
v a l i d memo r y
a d d r e s s ( VMA ) s i gna l t o U 2 1
p i n
1 3 .
U 2 1
I n v e r t s t he
s i gna l .
U 2 1 p i n 1 2 sends a VMA s i gna l t o
t he ch i p .
2 . As an I n t e r r upt con t r o l l e r :
A c h i p sends an I n t e r r up t s i gna l
t o U 1 0 1 .
U 1 0 1 p i n 1 7 sends a
VPA s i gna l t o t he m i c r o p r ocessor
( U 1 p i n 2 1 ) .
U42 p i n 6 sends l ACK t o U 1 0 1 p i n
4 . See
I n t e r r u p t Cyc l e i n t h i s
S e c t i on .
The
m i c r op r ocessor
sends
t he
I n t e r r upt
l e ve l t o
U 1 0 1 on
t he
fo I l ow I ng add r e s s I I nes .
A 1
U 1
p i n
29
t o
U 1 0 1
p i n
1
A 2
U 1
p i n
28 t o
U 1 0 1
p i n
2
A3
U 1
p i n
27
to
U 1 0 1
p i n
3
3-28
NOT E S
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...
Страница 57: ......
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...
Страница 158: ......
Страница 218: ......
Страница 242: ...HOPPER CONTROL BOARD Boar d Assemb l y AS 3556 1 3 o 0 o Q5 r 7 4...
Страница 258: ......
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...
Страница 290: ......
Страница 335: ......
Страница 343: ......
Страница 361: ...1 5 APPEND I CES APPEND I X 4 Co i n Mechan i sm I nc 1 5 6...
Страница 382: ......
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...
Страница 384: ......