Sharp CE-150 - Page 252

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@ Ml
Maska bh! int cn upt input. Wh en the interrupt enab le nag IE is acti ve .a high on th e pin
Ml req u es ts interr upt . to wh ic h t he CP U starts 10 e xecute th e inte r rupt pr ocess in g
routine whos.: h ig h order byte address is re presented by the add ress FFF8 H and l ow
o rd er byte addrcs' by FFF9 H.
How ins tr uc tion exe cu tion address is determined against the reset and inter rup t
input
E Jt tCfn.itl memory
Addie ss
EOOOH
E 171 H
E22 BH
C22Cll
fff8H
9
A
8
c
D
E
FFFFH
~
~
i...-:--..
ElH
71H
( 2H
2CH
E2H
2 0!1
lOH
OO H
v-- ·
1--
l
r
I
r
I
I
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-
-
-..
Start address
by RESET onp.; t
S t:'l. rl add• C-SS
by Ml 1np v1
S1art n dd ress
by NMI input
Start address
by timer 1 ntetrupt
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