--- np2/io/pit.c	2004/03/19 00:30:01	1.20
+++ np2/io/pit.c	2005/05/20 13:59:47	1.25
@@ -12,9 +12,9 @@
 
 
 #define	BEEPCOUNTEREX					// BEEPアイドル時のカウンタをα倍に
-// #if defined(CPUCORE_IA32)
+#if defined(CPUCORE_IA32)
 #define	uPD71054
-// #endif
+#endif
 
 
 // --- Interval timer
@@ -126,12 +126,18 @@ void rs232ctimer(NEVENTITEM item) {
 
 	if (item->flag & NEVENT_SETEVENT) {
 		pitch = pit.ch + 2;
+		if (pitch->flag & PIT_FLAG_I) {
+			pitch->flag &= ~PIT_FLAG_I;
+			rs232c_callback();
+		}
 		if ((pitch->ctrl & 0x0c) == 0x04) {
 			// レートジェネレータ
 			setrs232cevent(pitch->value, NEVENT_RELATIVE);
 		}
+		else {
+			setrs232cevent(0, NEVENT_RELATIVE);
+		}
 	}
-	rs232c_callback();
 }
 
 
@@ -149,7 +155,7 @@ static UINT getcount(const _PITCH *pitch
 		case 1:
 			switch(pitch->ctrl & 0x06) {
 #ifdef uPD71054				// ?
-				case 0x00:
+//				case 0x00:
 #endif
 				case 0x04:
 					return(pitch->value);
@@ -178,8 +184,10 @@ static UINT getcount(const _PITCH *pitch
 			clock = nevent_getremain(NEVENT_RS232C);
 			break;
 
+#if !defined(DISABLE_SOUND)
 		case 3:
 			return(board14_pitcount());
+#endif
 
 		default:
 			clock = 0;
@@ -335,10 +343,8 @@ static void IOOUTCALL pit_o73(UINT port,
 		return;
 	}
 	setbeepevent(pitch->value, NEVENT_ABSOLUTE);
-	if (!(pitch->ctrl & 0x0c)) {
-		beep_lheventset(1);
-	}
-	else {
+	beep_lheventset(1);												// ver0.79
+	if (pitch->ctrl & 0x0c) {
 		beep_hzset(pitch->value);
 	}
 	(void)port;
@@ -353,6 +359,7 @@ static void IOOUTCALL pit_o75(UINT port,
 	if (pit_setcount(pitch, dat)) {
 		return;
 	}
+	pitch->flag |= PIT_FLAG_I;
 	rs232c_open();
 	setrs232cevent(pitch->value, NEVENT_ABSOLUTE);
 	(void)port;
@@ -419,12 +426,16 @@ void itimer_reset(void) {
 	pit.ch[1].value = beepcnt;
 	pit.ch[2].ctrl = 0xb6 & 0x3f;
 	pit.ch[2].ch = 2;
+#if !defined(DISABLE_SOUND)
 	pit.ch[3].ctrl = 0x36;
 	pit.ch[3].ch = 3;
 	pit.ch[4].ctrl = 0x36;
 	pit.ch[4].ch = 4;
+#endif
 	setsystimerevent(0, NEVENT_ABSOLUTE);
+	beep_lheventset(1);												// ver0.79
 	beep_hzset(beepcnt);
+//	setrs232cevent(0, NEVENT_ABSOLUTE);
 }
 
 void itimer_bind(void) {