Sharp MZ-80B Owner's Manual page 89

80
Tl
T2 Tw
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Ta Tl
-
~
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~
~ r---L
AO - A7
X
PORT ADDRESS
X
IORQ
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I
IN
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Read
Cycle
RD
DATA BUS
-
f - - - - -
- - - - -
r---__r-c~
r------ - - -
1 - - - - - -
- - - - - r - - - - - -
----
WAIT
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OUT
WR
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Write
Cycle
DATA BUS
Tl
-
~
A0 - A7
X
IORQ
DATA BUS
- - - - - -
- -
- - - -
DATA BUS
WR
INPUT OR OUTPUT CYCLES
FIGURE 3.0-3
*
T2 Tw Tw
~ ~
~
PORT ADDRESS
\
\
r - - - - -
r-_\.__[~=
=]-\_--=
- - - - -
OUT
\
Ta
~
I
IN
I
- - - - -
- - - - -
I
*
Automatically inserted WAIT state
INPUT OR OUTPUT CYCLES WITH WAIT STATES
FIGURE 3.0-3A
~
X
}
READ
CYCLE
- - - -
- - - -
}
WRITE
CYCLE