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Hitachi MB-6890 Service Manual page 58

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6-4-7
Display
address
Basic
Master
L-3
has
high
resolution
In
mode,
and
make
character
one
address
conversion
and
circuit.
6-16
In
fig.
IC5l
level
is
and
L
outputted
display
address
4
bit
of
IC4O
without
output
resolution
In
high
mode,
address
raster
RAA1-RAA3
tha
lY-4?
of
IC5l
output
this
pin
of
IC5l).
By
is
display
address
converted
Fig.
6-18
shows
the
40
CRT
address.
All manuals and user guides at all-guides.com
conversion
switch
circuit
normal
mode
and
high
1
character
is
divided
with
8
byte
address.
switch
circuit.
Fig.
="H"level
circuit,
HRSO
SW
the
to
output
from
the
CRTC
MA13-MA10
conversion
in
display
HRSO-SW
L
level
=
shown
at
fig.
as
character
display
by
raster
address
RAA1-RAA3,
to
MAA13'MAA10.
characters
and
BO
characters
56
'
resolution
mode
as
by
8
the
raster
to
This
circuit
is
the
main
6-l6
shows
the
is
inputted
to
lY-4Y
of
C5l.
Therefore,
is
still
connected
in
address
shown
as
E
is
inputted
to
input
6-9
outputted
are
mode
signal
inputting
(by
4bit
MA13-MA10
upper
resolution
high
mode.
display
direction
display
the
of
part
of
G
input
upper
the
to
6-17.
fig.
of
IC5l,
the
each
to
SELECT
mode

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