--- nono/vm/romimg_x68k.h	2026/04/29 17:04:55	1.1.1.6
+++ nono/vm/romimg_x68k.h	2026/04/29 17:05:10	1.1.1.8
@@ -4,21 +4,25 @@
 // Licensed under nono-license.txt
 //
 
+//
+// X680x0 の各種 ROM
+//
+
 #pragma once
 
 #include "rom.h"
 
 class IPLROM1Device;
 
-class IPLROM0Device : public ROMDevice
+class IPLROM0Device : public IODevice
 {
-	using inherited = ROMDevice;
+	using inherited = IODevice;
  public:
 	IPLROM0Device();
 	virtual ~IPLROM0Device() override;
 
 	bool Init() override;
-	void ResetHard() override;
+	void ResetHard(bool poweron) override;
 
 	uint64 Read8(uint32 addr) override;
 	uint64 Read16(uint32 addr) override;
@@ -26,6 +30,8 @@ class IPLROM0Device : public ROMDevice
 	uint64 Peek8(uint32 addr) override;
 
  private:
+	uint32 ReadDecoder(uint32 addr);
+
 	IPLROM1Device *iplrom1 {};
 };
 
@@ -59,7 +65,7 @@ class CGROMDevice : public ROMDevice
 	bool Init() override;
 };
 
-extern std::unique_ptr<CGROMDevice> gCGROM;
-extern std::unique_ptr<IPLROM0Device> gIPLROM0;
-extern std::unique_ptr<IPLROM1Device> gIPLROM1;
-extern std::unique_ptr<IPLROM2Device> gIPLROM2;
+extern CGROMDevice *gCGROM;
+extern IPLROM0Device *gIPLROM0;
+extern IPLROM1Device *gIPLROM1;
+extern IPLROM2Device *gIPLROM2;