--- np2/bios/bios.c	2003/10/21 11:22:05	1.3
+++ np2/bios/bios.c	2003/11/22 12:49:49	1.6
@@ -6,6 +6,8 @@
 #include	"iocore.h"
 #include	"bios.h"
 #include	"biosmem.h"
+#include	"sound.h"
+#include	"fmboard.h"
 #include	"lio.h"
 #include	"fddfile.h"
 #include	"fdd_mtr.h"
@@ -94,6 +96,11 @@ static void bios_reinitbyswitch(void) {
 		gdc.display |= 4;
 	}
 	gdcs.textdisp |= GDCSCRN_EXT;
+
+	if ((pc.model >= PCMODEL_VX) && (usesound & 0x7e)) {
+		iocore_out8(0x188, 0x27);
+		iocore_out8(0x18a, 0x3f);
+	}
 }
 
 static void bios_vectorset(void) {									// ver0.30
@@ -231,7 +238,12 @@ static void bios_boot(void) {
 		I286_AL = 0x10;
 		mem[0x004f8] = 0xee;		// out	dx, al
 		mem[0x004f9] = 0xea;		// call	far
+#if 1
+		SETBIOSMEM32(0x004fa, 0x0000);
+		SETBIOSMEM32(0x004fc, 0xffff);
+#else
 		SETBIOSMEM32(0x004fa, 0xffff0000);
+#endif
 	}
 	else {
 		I286_SP = GETBIOSMEM16(0x00404);