--- nono/vm/opm.h	2026/04/29 17:04:45	1.1.1.1
+++ nono/vm/opm.h	2026/04/29 17:04:55	1.1.1.3
@@ -8,8 +8,7 @@
 
 #include "device.h"
 
-class OPMDevice
-	: public IODevice
+class OPMDevice : public IODevice
 {
 	using inherited = IODevice;
  private:
@@ -22,9 +21,9 @@ class OPMDevice
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 2;
-	uint64 Read(uint32 addr);
-	uint64 Write(uint32 addr, uint32 data);
-	uint64 Peek(uint32 addr);
+	uint64 Read(uint32 offset);
+	uint64 Write(uint32 offset, uint32 data);
+	uint64 Peek(uint32 offset);
 };
 
 extern std::unique_ptr<OPMDevice> gOPM;