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Other
circuit
6-9
6-9-1
generating
Sound
circuit
generating
Sound
1.
he
rising
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edge
is
signal
outputted
chart
of
generating
Sound
signals
which
2.
Sgund
transistors
Ql,
Q2
enable
to
input
3.
To
from
the
the
speaker,
circuit.
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1
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circuit
described
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after
latching
MPU
circuit.
IC93
made
by
was
then
and
Q3)
outputted
from
the
Sgund
terminal
input
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Interface
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Pen
6-I6
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input
signal
output
5"45
generating
Fig.
sound
in
fig.
6-44.
decoder
address
data
D7
by
IC93.
Fig.
is
amplified
by
the
speaker.
to
expansion
connectors
is
incorporated
I/O pins
JC,
content
pen
H
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er'
d
when
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I/O
timing
AMP
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circuit
generating
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U
circuit
timing
SEL,eoLmd
MUSIC
output
6-45
shows
the
circuit
sound
amp.
and
I/F-1-I/F-6
to
the
before
sound
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sync)
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sync)
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7
chart
timing
(Q
play
amplifier
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