--- nono/vm/romimg_x68k.cpp	2026/04/29 17:05:29	1.1.1.12
+++ nono/vm/romimg_x68k.cpp	2026/04/29 17:05:43	1.1.1.14
@@ -72,10 +72,6 @@ IPLROM0Device::~IPLROM0Device()
 bool
 IPLROM0Device::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	iplrom1 = GetIPLROM1Device();
 
 	return true;
@@ -130,7 +126,7 @@ IPLROM1Device::IPLROM1Device()
 	: inherited(OBJ_IPLROM1)
 {
 	// X680x0 では ROM への書き込みはバスエラー
-	write_op = -1;
+	write_op = BusData::BusErr;
 }
 
 // デストラクタ
@@ -142,10 +138,6 @@ IPLROM1Device::~IPLROM1Device()
 bool
 IPLROM1Device::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	std::string name;
 	uint devlen = 0x020000;
 	mask = devlen - 1;
@@ -172,7 +164,7 @@ IPLROM2Device::IPLROM2Device()
 	: inherited(OBJ_IPLROM2)
 {
 	// X680x0 では ROM への書き込みはバスエラー
-	write_op = -1;
+	write_op = BusData::BusErr;
 }
 
 // デストラクタ
@@ -184,10 +176,6 @@ IPLROM2Device::~IPLROM2Device()
 bool
 IPLROM2Device::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	uint devlen = 0x020000;
 	mask = devlen - 1;
 
@@ -212,7 +200,7 @@ CGROMDevice::CGROMDevice()
 	: inherited(OBJ_CGROM)
 {
 	// X680x0 では ROM への書き込みはバスエラー
-	write_op = -1;
+	write_op = BusData::BusErr;
 }
 
 // デストラクタ
@@ -224,10 +212,6 @@ CGROMDevice::~CGROMDevice()
 bool
 CGROMDevice::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	uint devlen = 768 * 1024;
 	mask = 1024 * 1024 - 1;