--- np2/io/iocore.c	2004/04/04 22:22:26	1.18
+++ np2/io/iocore.c	2004/07/01 11:42:54	1.19
@@ -67,10 +67,12 @@ static	UINT8		ioterminate[0x100];
 
 static void IOOUTCALL defout8(UINT port, REG8 dat) {
 
+#if !defined(DISABLE_SOUND)
 	if ((port & 0xfff0) == cs4231.port) {
 		cs4231io_w8(port, dat);
 		return;
 	}
+#endif
 	if ((port & 0xf0ff) == 0x801e) {
 		dipsw_w8(port, dat);
 		return;
@@ -80,9 +82,11 @@ static void IOOUTCALL defout8(UINT port,
 
 static REG8 IOINPCALL definp8(UINT port) {
 
+#if !defined(DISABLE_SOUND)
 	if ((port & 0xfff0) == cs4231.port) {
 		return(cs4231io_r8(port));
 	}
+#endif
 	if ((port & 0xf0ff) == 0x801e) {
 		return(dipsw_r8(port));
 	}