--- nono/vm/sprite.cpp	2026/04/29 17:05:29	1.1.1.12
+++ nono/vm/sprite.cpp	2026/04/29 17:06:01	1.1.1.14
@@ -22,7 +22,6 @@ const busdata read_wait = busdata::Wait(
 SpriteDevice::SpriteDevice()
 	: inherited(OBJ_SPRITE)
 {
-	mem.reset(new uint8[4 * 8192]);
 }
 
 // デストラクタ
@@ -30,6 +29,20 @@ SpriteDevice::~SpriteDevice()
 {
 }
 
+// 初期化
+bool
+SpriteDevice::Init()
+{
+	constexpr size_t devlen = 4 * 8192;
+	mem.reset(new(std::nothrow) uint8[devlen]);
+	if ((bool)mem == false) {
+		warnx("Could not allocate %zu bytes at %s", devlen, __method__);
+		return false;
+	}
+
+	return true;
+}
+
 // XXX ResetHard() 未調査
 
 busdata