--- nono/m680x0/testea.cpp	2026/04/29 17:05:15	1.1.1.3
+++ nono/m680x0/testea.cpp	2026/04/29 17:05:26	1.1.1.4
@@ -19,7 +19,7 @@ static int    g_fetch_ptr;
 // ダミーのフェッチルーチン
 // グローバル変数 g_fetch[] で指定された値を順に返す
 uint32
-MPU680x0Device::fetch_16()
+MPU680x0Device::fetch_2()
 {
 	uint16 data;
 
@@ -31,26 +31,32 @@ MPU680x0Device::fetch_16()
 }
 
 uint32
-MPU680x0Device::fetch_32()
+MPU680x0Device::fetch_4()
 {
 	uint32 data;
 
-	data = fetch_16() << 16;
-	data |= fetch_16();
+	data = fetch_2() << 16;
+	data |= fetch_2();
 	return data;
 }
-uint32 MPU680x0Device::read_8(uint32 ea)  { return 0; }
-uint32 MPU680x0Device::read_16(uint32 ea) { return 0; }
+
 // ダミーリード
 // アドレスを2倍にして返す。
 // メモリ間接の post index、pre index を演算だけで判別するため。
 uint32
-MPU680x0Device::read_32(uint32 ea) {
-	return ea << 1;
+MPU680x0Device::read_data(busaddr laddr)
+{
+	if (laddr.GetSize() == 4) {
+		return laddr.Addr() << 1;
+	}
+	return 0;
+}
+
+void
+MPU680x0Device::write_data(busaddr laddr, uint32 data)
+{
 }
-void MPU680x0Device::write_8(uint32 ea, uint32 data)  { }
-void MPU680x0Device::write_16(uint32 ea, uint32 data) { }
-void MPU680x0Device::write_32(uint32 ea, uint32 data) { }
+
 void
 panic_func(const char *func, const char *fmt, ...)
 {