Sharp MZ-800 Service Manual page 18

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
•