--- nono/vm/interrupt.cpp	2026/04/29 17:05:33	1.1.1.11
+++ nono/vm/interrupt.cpp	2026/04/29 17:05:46	1.1.1.13
@@ -194,22 +194,11 @@ M680x0Interrupt::~M680x0Interrupt()
 bool
 M680x0Interrupt::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	mpu680x0 = GetMPU680x0Device(mpu);
 
 	return true;
 }
 
-// リセット
-void
-M680x0Interrupt::ResetHard(bool poweron)
-{
-	inherited::ResetHard(poweron);
-}
-
 void
 M680x0Interrupt::ChangeInterrupt()
 {
@@ -626,8 +615,7 @@ Virt68kInterrupt::Init()
 void
 Virt68kInterrupt::IncMonitorHeight()
 {
-	auto size = monitor->GetSize();
-	monitor->SetSize(size.width, size.height + 1);
+	monitor->AddHeight(1);
 }
 
 // 割り込みアクノリッジに応答する