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