--- nono/vm/sprite.h	2026/04/29 17:05:17	1.1.1.8
+++ nono/vm/sprite.h	2026/04/29 17:05:42	1.1.1.11
@@ -16,7 +16,7 @@ class SpriteDevice : public IODevice
 {
 	using inherited = IODevice;
 
-	static const int baseaddr = 0xeb0000;
+	static const uint32 baseaddr = 0xeb0000;
 
 	struct sprite_scroll {
 		uint16 xpos;
@@ -42,15 +42,18 @@ class SpriteDevice : public IODevice
 
  public:
 	SpriteDevice();
-	virtual ~SpriteDevice() override;
+	~SpriteDevice() override;
 
-	uint64 Read8(uint32 addr) override;
-	uint64 Read16(uint32 addr) override;
-	uint64 Write8(uint32 addr, uint32 data) override;
-	uint64 Write16(uint32 addr, uint32 data) override;
-	uint64 Peek8(uint32 addr) override;
+	bool Init() override;
+
+	busdata Read(busaddr addr) override;
+	busdata Write(busaddr addr, uint32 data) override;
+	busdata Peek1(uint32 addr) override;
 
  private:
+	busdata Get16(uint32 addr) const;
+	busdata Set16(uint32 addr, uint32 data);
+
 	struct sprite_ctrl reg {};
 	std::unique_ptr<uint8[]> mem {};
 };