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Sharp MZ-800 Service Manual page 18

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MZ-800
ClK
VRAS
VCAS
VOE
VAD 0-7
VAO -7
lOAD
MZ-700 MODE DISPLAY TIMING
56.3ns
r=:
451ns
... 1
~--------------~,
,'----
''-_----'I
,
~
ROW
X
COL.
X
ATB. adr.
X
ROW
X
COL.
X
DUMMY adr. •
X
X
' - - - - - v - - - - - '
'---'-'-'-''--''-'-----'
' - - - v - - - - '
' - - - - - - - - - - '
~
_ _
-.J ' - - - -
text adr.
CG. adr.
-------
--~C=>>----<C=>>--------<C=>>------<c=>>-----
text DATA
ATB. DATA
CG.DATA
invalid DATA
(shift register)
'
....
- - - - - '
,
....
_ - - -
MZ-SOO MODE (320
X
200 dot)
ClK
\
. .
DISP. cycle
.1 . .
CPU cycle
VRAS
-.J
\
\
VCAS
\
\
VOE
\
\
\
VADO -7
~
ROW
X
COL.
X
COL.
X
ROW
X
COL.
II (IV) plane adr.
I (III) plane adr.
CPU adr. latch DATA
VCO -7
------
C=>>-------<C=>>-------<C=>>---------<
I plane DATA
II plane DATA
CPU read DATA
VAO - 7
---------C=>-----<C=>>-----<C=>~----------~
III plane DATA
IV plane DATA
CPU read DATA
lOAD
, ,
17

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