diff --git a/Makefile b/Makefile
index d829fa6..4ff1007 100644
--- a/Makefile
+++ b/Makefile
@@ -24,6 +24,7 @@ OBJS = src/fileio.o \
 	src/sys/nact_input.o \
 	src/sys/nact_sys3.o \
 	src/win/nact_win.o \
+	src/win/mako_win.o \
 	src/win/unicode.o \
 	src/res3/Script1.o
 
diff --git a/src/sys/mako.h b/src/sys/mako.h
index b2c60e6..29633f0 100644
--- a/src/sys/mako.h
+++ b/src/sys/mako.h
@@ -25,6 +25,10 @@ protected:
 	NACT* nact;
 
 private:
+	void reset_midi();
+	void send_2bytes(uint8 d1, uint8 d2);
+	void send_3bytes(uint8 d1, uint8 d2, uint8 d3);
+
 	// FM, CD-DA
 	bool cdda_play;
 	int current_mark;	// Y18
diff --git a/src/sys/mako_midi.cpp b/src/sys/mako_midi.cpp
index ebfcf15..3add5da 100644
--- a/src/sys/mako_midi.cpp
+++ b/src/sys/mako_midi.cpp
@@ -4,36 +4,11 @@
 	[ MAKO - midi ]
 */
 
-#include <windows.h>
-#include <mmsystem.h>
 #include "mako.h"
 #include "dri.h"
 
 #define next_mml(p) mml[p].data[mml[p].addr++]
 
-// MIDI音源
-union UNION_MIDI_DATA {
-	DWORD msg;
-	BYTE data[4];
-};
-static UNION_MIDI_DATA midi;
-static HMIDIOUT hMidi;
-
-#define send_2bytes(d1, d2) { midi.data[0] = (BYTE)d1; midi.data[1] = (BYTE)d2; midiOutShortMsg(hMidi,midi.msg); }
-#define send_3bytes(d1, d2, d3) { midi.data[0] = (BYTE)d1; midi.data[1] = (BYTE)d2; midi.data[2] = (BYTE)d3 ;midiOutShortMsg(hMidi, midi.msg); }
-
-void MAKO::initialize_midi()
-{
-	// MIDI音源の初期化
-	midiOutOpen(&hMidi, MIDI_MAPPER, NULL, NULL, CALLBACK_NULL);
-}
-
-void MAKO::release_midi()
-{
-	// MIDI音源の開放
-	midiOutClose(hMidi);
-}
-
 void MAKO::stop_midi()
 {
 	for(int i = 0; i < 10; i++) {
@@ -87,20 +62,7 @@ void MAKO::start_midi()
 		play[i + 3].pan = mda[i + 256].pan;
 	}
 
-	// MIDI音源のGS-RESET
-	BYTE gs_reset[11] = {0xf0, 0x41, 0x20, 0x42, 0x12, 0x40, 0x00, 0x7f, 0x00, 0x41, 0xf7};
-	MIDIHDR mhMidi;
-	ZeroMemory(&mhMidi, sizeof(mhMidi));
-	mhMidi.lpData = (LPSTR)gs_reset;
-	mhMidi.dwBufferLength = 11;
-	mhMidi.dwBytesRecorded = 11;
-
-	midiOutPrepareHeader(hMidi, &mhMidi, sizeof(mhMidi));
-	midiOutLongMsg(hMidi, &mhMidi, sizeof(mhMidi));
-	while(!(mhMidi.dwFlags & MHDR_DONE)) {
-		SDL_Delay(10);
-	}
-	midiOutUnprepareHeader(hMidi, &mhMidi, sizeof(mhMidi));
+	reset_midi();
 
 	// システムリセット、ボリュームリセット
 	for(int i = 0; i < 10; i++) {
diff --git a/src/win/mako_win.cpp b/src/win/mako_win.cpp
new file mode 100644
index 0000000..e95ae10
--- /dev/null
+++ b/src/win/mako_win.cpp
@@ -0,0 +1,57 @@
+#include <windows.h>
+#include <mmsystem.h>
+#include "mako.h"
+
+// MIDI髻ｳ貅�
+union UNION_MIDI_DATA {
+	DWORD msg;
+	BYTE data[4];
+};
+static HMIDIOUT hMidi;
+
+void MAKO::initialize_midi()
+{
+	// MIDI髻ｳ貅舌�ｮ蛻晄悄蛹�
+	midiOutOpen(&hMidi, MIDI_MAPPER, NULL, NULL, CALLBACK_NULL);
+}
+
+void MAKO::release_midi()
+{
+	// MIDI髻ｳ貅舌�ｮ髢区叛
+	midiOutClose(hMidi);
+}
+
+void MAKO::reset_midi()
+{
+	// MIDI髻ｳ貅舌�ｮGS-RESET
+	BYTE gs_reset[11] = {0xf0, 0x41, 0x20, 0x42, 0x12, 0x40, 0x00, 0x7f, 0x00, 0x41, 0xf7};
+	MIDIHDR mhMidi;
+	ZeroMemory(&mhMidi, sizeof(mhMidi));
+	mhMidi.lpData = (LPSTR)gs_reset;
+	mhMidi.dwBufferLength = 11;
+	mhMidi.dwBytesRecorded = 11;
+
+	midiOutPrepareHeader(hMidi, &mhMidi, sizeof(mhMidi));
+	midiOutLongMsg(hMidi, &mhMidi, sizeof(mhMidi));
+	while(!(mhMidi.dwFlags & MHDR_DONE)) {
+		SDL_Delay(10);
+	}
+	midiOutUnprepareHeader(hMidi, &mhMidi, sizeof(mhMidi));
+}
+
+void MAKO::send_2bytes(uint8 d1, uint8 d2)
+{
+	UNION_MIDI_DATA midi;
+	midi.data[0] = (BYTE)d1;
+	midi.data[1] = (BYTE)d2;
+	midiOutShortMsg(hMidi, midi.msg);
+}
+
+void MAKO::send_3bytes(uint8 d1, uint8 d2, uint8 d3)
+{
+	UNION_MIDI_DATA midi;
+	midi.data[0] = (BYTE)d1;
+	midi.data[1] = (BYTE)d2;
+	midi.data[2] = (BYTE)d3;
+	midiOutShortMsg(hMidi, midi.msg);
+}