Canon A-200 series Service Manual page 110

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OSC
(14MHz)
CRT-ClK
CPU!CRTC
RAS
CAS
r
CRTC-RAS ADDR
[
CRTC-CAS ADDR
CRTC-ADDR
COLUMN
ROW
COLUMN
ROW
COLUMN
IROWX
_._-
. _ ­
CH-lATCH
AT-lATCH
0
sf[
-...J
DOT-ClK
(14MHz)
I
lATCH-DATA CLEAR
DISP
DISP(CRTC)
ADDR(CRTC)
o
lATCH ADDR
MA=O'
MA=l'
80 x 25 CHARACTERS TEXT MODE TIMING
Figure 6·42

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