--- nono/vm/xpbus.h	2026/04/29 17:05:29	1.1.1.3
+++ nono/vm/xpbus.h	2026/04/29 17:06:00	1.1.1.6
@@ -13,11 +13,12 @@
 #include "mainbus.h"
 #include <array>
 
+class NopIODevice;
 class SubRAMDevice;
 class SubRAM2Device;
 class XPRAMDevice;
 
-// XP 外部バス
+// XP 物理バス
 class XPbusDevice : public IODevice
 {
 	using inherited = IODevice;
@@ -71,6 +72,6 @@ class XPRAMDevice : public IODevice
 	std::array<uint8, 512> ram {};
 };
 
-static inline XPbusDevice *GetXPbusDevice() {
+inline XPbusDevice *GetXPbusDevice() {
 	return Object::GetObject<XPbusDevice>(OBJ_XPBUS);
 }