--- np2/bios/bios.c	2004/01/05 11:46:56	1.21
+++ np2/bios/bios.c	2004/01/08 16:29:56	1.24
@@ -14,6 +14,7 @@
 #include	"keytable.res"
 #include	"itfrom.res"
 #include	"startup.res"
+#include	"biosboot.res"
 #include	"sxsibios.res"
 
 
@@ -171,6 +172,7 @@ void bios_init(void) {
 	CopyMemory(mem + 0xfd800 + 0x1ab7, fdfmt2hd, sizeof(fdfmt2hd));
 	CopyMemory(mem + 0xfd800 + 0x1adf, fdfmt2dd, sizeof(fdfmt2dd));
 	CopyMemory(mem + 0xfd800 + 0x1980, fdfmt144, sizeof(fdfmt144));	// ver0.31
+	CopyMemory(mem + 0xfd800 + 0x2400, biosboot, sizeof(biosboot));	// ver0.73
 
 	SETBIOSMEM16(0xfffe8, 0xcb90);
 	SETBIOSMEM16(0xfffec, 0xcb90);
@@ -185,7 +187,7 @@ void bios_init(void) {
 
 	bios_reinitbyswitch();
 	mem[MEMB_CRT_STS_FLAG] = 0x84;
-	mem[MEMB_BIOS_FLAG0] = 0x03;						// 00/05/17 beep tone
+	mem[MEMB_BIOS_FLAG0] = 0x03;
 	mem[MEMB_F2DD_MODE] = 0xff;										// ver0.29
  	SETBIOSMEM16(MEMW_DISK_EQUIP, 0x0003);							// ver0.29
 	SETBIOSMEM32(MEMD_F2DD_POINTER, 0xfd801ad7);
@@ -207,14 +209,17 @@ void bios_init(void) {
 #else
 	fh = file_open_c("itf.rom");
 	if (fh != FILEH_INVALID) {
-		file_read(fh, &mem[ITF_ADRS], 0x8000);
+		file_read(fh, mem + ITF_ADRS, 0x8000);
 		file_close(fh);
+		TRACEOUT(("load itf.rom"));
 	}
 	extmem_init(np2cfg.EXTMEM);
 #endif
-//	CopyMemory(mem + 0xd0000, sxsibios, sizeof(sxsibios));
 
-	CopyMemory(mem + 0x1c0000, mem + 0x1f8000, 0x08000);
+	CopyMemory(mem + 0xd0000, sxsibios, sizeof(sxsibios));
+	CPU_RAM_D000 &= ~(1 << 0);
+
+	CopyMemory(mem + 0x1c0000, mem + ITF_ADRS, 0x08000);
 	CopyMemory(mem + 0x1e8000, mem + 0x0e8000, 0x10000);
 }
 
@@ -237,7 +242,7 @@ static void bios_boot(void) {
 	else {
 		CPU_SP = GETBIOSMEM16(0x00404);
 		CPU_SS = GETBIOSMEM16(0x00406);
-		TRACEOUT(("Protect Disable... SS:SP = %.4x:%.4x", CPU_SS, CPU_SP));
+		TRACEOUT(("CPU Reset... SS:SP = %.4x:%.4x", CPU_SS, CPU_SP));
 	}
 }
 
@@ -247,9 +252,13 @@ UINT MEMCALL biosfunc(UINT32 adrs) {
 	UINT16	bootseg;
 
 	if ((CPU_ITFBANK) && (adrs >= 0xf8000) && (adrs < 0x100000)) {
+#if 1					// for epson ITF
+		return(0);
+#else
 		CPU_IP--;
 		CPU_REMCLOCK = -1;
 		return(1);
+#endif
 	}
 
 	switch(adrs) {													// ver0.30
@@ -353,8 +362,12 @@ UINT MEMCALL biosfunc(UINT32 adrs) {
 			return(1);
 
 		case 0xfd802:					// ブート
-			bios_reinitbyswitch();									// ver0.27
-			bios_vectorset();										// ver0.29
+			bios_reinitbyswitch();
+			bios_vectorset();
+#if 1																// ver0.73
+			CPU_CS = 0xfd80;
+			CPU_IP = 0x2400;
+#else
 			bootseg = bootstrapload();
 			CPU_STI;
 			CPU_CS = (bootseg != 0)?bootseg:0xe800;
@@ -362,6 +375,7 @@ UINT MEMCALL biosfunc(UINT32 adrs) {
 			CPU_SS = 0x0030;
 			CPU_SP = 0x00e6;
 			CPU_IP = 0x0000;
+#endif
 			return(1);
 
 		case 0xfffe8:					// ブートストラップロード
@@ -371,8 +385,6 @@ UINT MEMCALL biosfunc(UINT32 adrs) {
 				CPU_STI;
 				CPU_CS = bootseg;
 				CPU_IP = 0x0000;
-				CPU_SS = 0x0030;
-				CPU_SP = 0x00e6;
 				return(1);
 			}
 			return(0);