
TECHNICAL INFORMATION
SYSTEM INTERRUPTS
S i x t e e n l e v e l s o f s y s t e m i n t e r r u p t s a r e
p r o v i d e d o n F O X - I I . T h e f o l l o w i n g s h o w s t h e ·
i n t e r r u p t - l e v e l a s s i g n m e n t s i n d e c r e a s i n g p r i o r i t y . .
Level
M i c r o pr o c e s s o r N M I
I n t e r r u p t C o n t r o l l e rs
C T L R I
I R Q O
I R Q !
I R Q 3
I R Q4
I R Q5
I R Q6
I R Q 7
4-6
C T L R 2
I R Q 8
I R Q9
I R Q
I
0
I R Q
I I
I R Q I 2
I R Q I 3
I R Q I 4
I R Q
I S
Function
P a r i t y o r 1 / 0 C h a n n e l
C h e c k
T i m e r O u t p u t 0
K e y bo a r d
( O u t p u t B u f f e r F u l l )
I n t e r r u p t f r o m C T L R 2
R e a l - t i m e C l o c k I n t e r r u p t
So f t w a r e R e d i r e c t e d t o
I N T O A H ( I R Q2)
R e s e r v e d
R e s e r v e d
R e s e r v e d
C o p r o c e s s o r
F i x ed D i s k C o n t r o l l e r
R e s e r v e d
Se r i a l P o r t 2
S e r i a l P o r t I
P a r a l l e l P o r t 2
D i s k e t t e C o n t r o l l e r
Pa r a l l e l P o r t I
..
TECHNICAL INFORMATION
1 / 0 a d d r e s s h e x 1 0 0 t o 3 F F a r e a v a i l a b l e o n
t h e I / 0 c h a n n e l .
A D D R ESS
( H E X )
I FO- I F8
200-20 7
278-27F
2F8-2FF
300-3 1 F
360-36F
3 7 8 - 3 7 F
3 8 0 - 3 8 F
3 A 0-3 A F
3B0-3BF
3 C0-3CF
3D0-3DF
3F0-3F7
3 F 8 - 3 FF
DE V I CE
F i x e d D i s k
G a m e I / 0
Pa ra l l e l P r i n te r P o r t 2
S e r i a l P o r t 2
P r o t o t ype Card
R e s e r v e d
P a ra l l e l P r i n t e r Port
I
S D L C , b i s y n c h r o n o u s 2
B i s y n c h ronous
I
Monoch rome D i s p l a y a n d P r i n te r
A d a p t e r
R e s e r v e d
C o l o r G r a p h ics Mo n i to r A d a pter
D i s k e t t e Con t r o l l e r
S e r i a l P o r t
l
4-3
Summary of Contents for FOX-II
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