--- nono/vm/mpu680x0.cpp	2026/04/29 17:04:55	1.1.1.9
+++ nono/vm/mpu680x0.cpp	2026/04/29 17:04:59	1.1.1.10
@@ -8,8 +8,10 @@
 
 #include "mpu680x0.h"
 #include "config.h"
+#include "m68030bus.h"
 #include "m68030excep.h"
 #include "mainapp.h"
+#include "uimessage.h"
 #include "vm.h"
 #include <math.h>
 
@@ -69,6 +71,9 @@ MPU680x0Device::Init()
 		}
 	}
 
+	cpu->halt_callback = &MPU680x0Device::HaltCallback;
+	cpu->halt_arg = NULL;
+
 	return true;
 }
 
@@ -152,12 +157,75 @@ MPU680x0Device::SetFLineCallback(bool (*
 	cpu->fline_arg = arg;
 }
 
-// ダブルバスフォールトのコールバックを指定。
-void
-MPU680x0Device::SetHaltCallback(void (*callback)(void *), void *arg)
+// MPU ホールト時の MPU からのコールバック関数
+/*static*/ void
+MPU680x0Device::HaltCallback(void *arg)
+{
+	UIMessage::Post(UIMessage::HALT);
+}
+
+// MPU からのアクセスをエミュレート
+uint64
+MPU680x0Device::Read8(uint32 addr)
+{
+	try {
+		return m68030_read_8(cpu, addr);
+	} catch (...) {
+		return (uint64)-1;
+	}
+}
+
+uint64
+MPU680x0Device::Read16(uint32 addr)
+{
+	try {
+		return m68030_read_16(cpu, addr);
+	} catch (...) {
+		return (uint64)-1;
+	}
+}
+
+uint64
+MPU680x0Device::Read32(uint32 addr)
 {
-	cpu->halt_callback = callback;
-	cpu->halt_arg = arg;
+	try {
+		return m68030_read_32(cpu, addr);
+	} catch (...) {
+		return (uint64)-1;
+	}
+}
+
+uint64
+MPU680x0Device::Write8(uint32 addr, uint32 data)
+{
+	try {
+		m68030_write_8(cpu, addr, data);
+		return 0;
+	} catch (...) {
+		return (uint64)-1;
+	}
+}
+
+uint64
+MPU680x0Device::Write16(uint32 addr, uint32 data)
+{
+	try {
+		m68030_write_16(cpu, addr, data);
+		return 0;
+	} catch (...) {
+		return (uint64)-1;
+	}
+}
+
+uint64
+MPU680x0Device::Write32(uint32 addr, uint32 data)
+{
+	try {
+		m68030_write_32(cpu, addr, data);
+		return 0;
+	} catch (...) {
+		return (uint64)-1;
+	}
 }
 
 // モニター更新 (レジスタウィンドウ)