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A
the
After
The
imum)
(Ex)
The
RO
Ei
R2
R3
R4
R5
R6
R7
R8
R9
R10
u
R12
R13
R14
R15
Once
*
registers.
In
Channel
Channel
Channel
Refer to
Registers.
(Ex.)
2) GENERATING NOISE
Noise
sound.
of
channel,
B, C.
A,
that, assign the sound
sound
has the range
volume
and
the
all
levels
SOUND
10 [DD
8,
Registers
inside the
REGISTER
LAf
Ch:
annel
frequency
es
B
Channel
frequenc\
Channel
frequences
C
Ei
#
Noise
frequency
Channel
assignment
Volume
channel
of
A
chanel
Volume
of
B
channel
Volume
of
C
Period
envelope
of
p
Shape
of
envelope
DATA
I/O PORT
A
PORT
DATA
VO
B
values
the
of
Register
second place,
the
A
set
to
Register
is
set
Register
is
to
B
set
to
C is
Register
MSX BASIC
SOUND
0, 12: SOUND 1,
generating ''Sha—"
is
Noise,
To
generate
and "the
sound"',
See
note)
(X:
volume (Register
from
0 level
are
composed
I.C.
consist
SOUND
IN
/OUT
[toa
108
Voluem (0—15, 16
Volume (0—15, 16
Volume (0—15, 16
8
8 bit
are assigned,
they remain
assign the frequency
we
1
O0,
2, 3
4, 5
reference about calculating the values
[3]
2000
and
sound,
assign "the channel", "the
should
You
Freqnency"'.
gj
8, 9, 10).
(no sound) to 15 level (max-
of 16
steps.
the
of
followings;
DATA
0
0— 255
0—255
0-15
0— 255
0-15
0—31
NOISE
cTel[alcTs]a
with
envelope)
with
envelope)
with
envelope)
VE
0255
E2
E3
|
|
[
/O
A
bit
parallel
port
parallel
port
B
VO
data
until
will
new
the
sound.
of
used
for making the broken
is
CHANNEL
E1
EO
[
be assigned
to
set
to
volume
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