From 4920b124799b21bd91ebf26600f316cd72508821 Mon Sep 17 00:00:00 2001
From: sparky4 <sparky4@cock.li>
Date: Wed, 15 Jul 2015 13:59:09 -0500
Subject: [PATCH] bakapee! 	modified:   src/lib/16_snd.c 	modified:  
 src/lib/16_snd.h

---
 src/lib/16_snd.c | 34 ++++++++++++++++++++++++++++------
 src/lib/16_snd.h | 10 +++++++---
 2 files changed, 35 insertions(+), 9 deletions(-)

diff --git a/src/lib/16_snd.c b/src/lib/16_snd.c
index 5ade6445..828237f5 100644
--- a/src/lib/16_snd.c
+++ b/src/lib/16_snd.c
@@ -23,12 +23,12 @@
 
 #include "src/lib/16_snd.h"
 
-void opl2out(word data, word reg)
+void opl2out(word reg, word data)
 {
 	__asm
 	{
 		mov     ax,reg
-		mov     dx,word ptr [OPLPORT]
+		mov     dx,word ptr [ADLIB_FM_ADDRESS]
 		or      ah,ah
 		jz      @@1
 		add     dx,2
@@ -46,12 +46,12 @@ void opl2out(word data, word reg)
 	}
 }
 
-void opl3out(word data, word reg)
+void opl3out(word reg, word data)
 {
 	__asm
 	{
 		mov     ax,reg
-		mov     dx,word ptr [OPLPORT]
+		mov     dx,word ptr [ADLIB_FM_ADDRESS]
 		or      ah,ah
 		jz      @@1
 		add     dx,2
@@ -71,7 +71,7 @@ void opl3exp(word data)
 	__asm
 	{
 		mov     ax,data
-		mov     dx,word ptr [OPLPORT]
+		mov     dx,word ptr [ADLIB_FM_ADDRESS]
 		add     dx,2
 		out     dx,al
 		mov     cx,6
@@ -84,4 +84,26 @@ void opl3exp(word data)
 @@2:    in      al,dx
 		loop    @@2
 	}
-}
\ No newline at end of file
+}
+
+/* Function: FMResest *******************************************************
+*
+*     Description:        quick and dirty sound card reset (zeros all
+*                         registers).
+*
+*/
+void FMReset(void/*int percusiveMode*/)
+{
+	int i;
+
+	/* zero all registers */
+	for(i = MIN_REGISTER; i < MAX_REGISTER+1; i++) opl2out(i, 0);
+
+	/* allow FM chips to control the waveform of each operator */
+	opl2out(0x01, 0x20);
+
+	/* set rhythm enabled (6 melodic voices, 5 percussive) */
+	opl2out(0xBD, 0x20);
+
+	//FMSetPercusiveMode(percusiveMode);
+} /* End of FMReset */
diff --git a/src/lib/16_snd.h b/src/lib/16_snd.h
index 3f752949..86c1de58 100644
--- a/src/lib/16_snd.h
+++ b/src/lib/16_snd.h
@@ -25,10 +25,14 @@
 
 #include "src/lib/16_head.h"
 
-#define OPLPORT 388
+#define MIN_REGISTER			0x01
+#define MAX_REGISTER			0xF5
+#define ADLIB_FM_ADDRESS	0x388	/* adlib address/status register */
+#define ADLIB_FM_DATA		0x389	/* adlib data register           */
 
-void opl2out(word data, word reg);
-void opl3out(word data, word reg);
+void opl2out(word reg, word data);
+void opl3out(word reg, word data);
 void opl3exp(word data);
+void FMReset(void/*int percusiveMode*/);
 
 #endif /*__16_SND_H_*/
-- 
2.39.2