Advertisement
Video
6-6
Signal
Generator
Video
Signal
Generator
is
circuit
below.
as
6-6-1
Character
Generator
6-22
shows
the
Fig
the
of
the
change
output
interlace
mode
or
non
Colour
RAM
output,
is
When
G/C
signal
operable.
IClO7
becomes
consists
of
IClO7
is
inputted
bit
DDO-DD7
scanning
according
to
two
6-23
character
Fig
16
1)
Uses
byte
ifea.
.
8
2)
Uses
Byte
interlace
3)
Is
character
one
if
non-interlace
this
In
case,
if
character
display
field
field
and
even
in
l)
pattern
area
the
complicatedpattern
Therefore,
Graphic
6-6-2
generator
is
divided
Graphic
is
the
HRSO-SW
done
by
shows
graphic
Fig.
6-24
6-24,
HRSO-SW
In
fig.
SW=H,high
resolution
If
HRSO
resolution
In
high
ICl14
ICll3,
output
mode,
raster
In
regular
14
pin.
input
2,
By
character
is
divided
area
the
other
hand,
On
l
character
is,
area
direction
address
raster
using
address
area
dividend
is
The
done
of
40
character
mode
mode
if
we
compare
is
table
6-13.
as
per
6-6-3
Video
Signal
Video
signal
Synchronous
(1)
8
bit
signal,
serial
converted
to
Block
Block
is
shown
Circuit
character
generator
character
to
interlace
mode
per
G/C signal
is
inputted
it
is
i.e.
when
Low,
4K
address
Byteg
raster
address
input
to
(interlace
modes
be
ROM
generator
can
character
one
per
and
character
per
Non-Interlace
common
pattern.
mode,
only
is
which
required
is
read
each
other
by making
double
dots
of
128
circuit
resolution
into
high
which
is
signal
circuit.
generator
is
connected
signal
mode
is
obtained
side
mode,
A
input
side
is
and
input
B
address
signal
this
signal,
data
8
shown
by
as
resolution
in
high
is
divided
64
by
divided
8
is
switch
circuit.
l
character
area
horizontal
direction
to
between
the
relationship
circuit
generator
signal
generator
-
which
is
in
made
character
SiQD5l
ICll7
by
The
explanation
fig
6-21.
at
circuit.
In
character
is
data
bit
required
of
dots
structure
IClO7
20
pin
to
character
mode,
character
signal
RAA
-RAA
characger
and
AO-A
mode
non-interlace
and
into
three
divided
interlace
and
used
for
used
for
Non-Interlace
and
have
record
area
2)
and
3)
area
is
in
recorded
3)
the
balance
and
make
16
number
of
to
varieties
recorded
are
and
mode
regular
outputted
MODE
SEL
ICll4
ICll3,
to
if
and
Low,
which
is
the
output
in
connected
case
of
are
RAA3, RAA2
switch
bit
DD
is
-DD7
2-25
fig.
(a).
bit
mode,
data
DD
-DD
6-29
shown
fig.
as
address
by
raster
RAA3-RAA1
unit
in
fig.
6-25,
is
obtained
mode
display
is
in
circuit
Fig.
generator
or
make
the
to
brightness
/
each
of
circuit,
generator
the
according
to
each
character.
terminal)
(chip
select
generator
and
display
RAM
is
outputted
mode).
b55iC3llY5
3f93S
recording
pattern
recording.
pattern
of
8
Bytes
per
in
further
are
use,
the
pattern
same
area,
with
the
character
direction.
vertical
in
1).
area
This
mode
selection
mode.
IC39
2
pin.
register
terminal).
1
(select
pin
,
it
becomes
regular
-5
ICll2
connected
is
UL
of
mode.
regular
ICll2
select
inputted
to
outputted,
one
is
outputted
as
(by.
is
This
because
in
character
one
resolution
of
double
character
in
of
80
case
resolution
and
graphic
6-26.
graphic
generator
in
video
signal
ROM
data
more,
in
th
odd
e
mode.
to
it
that
ratio
circuit,
is
Advertisement
