Sharp MZ-800 - Chapter 2 Start Up

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
•