--- nono/vm/fdc.h	2026/04/29 17:04:35	1.1.1.2
+++ nono/vm/fdc.h	2026/04/29 17:05:11	1.1.1.7
@@ -4,10 +4,13 @@
 // Licensed under nono-license.txt
 //
 
+//
+// FDC (uPD72065B)
+//
+
 #pragma once
 
-#include "device.h"
-#include "scheduler.h"
+#include "event.h"
 
 enum fdc_phase_t {
 	PHASE_IDLE = 0,
@@ -19,6 +22,7 @@ enum fdc_phase_t {
 struct FDD {
 	bool motor;				// モーターオン
 	bool seek;				// シーク中/シーク完了割り込み保留中
+	bool ready;
 };
 
 struct FDC {
@@ -72,7 +76,7 @@ struct FDC {
 	static const int STAT_RQM		= 0x80;	// Request For Master
 	static const int STAT_DIO		= 0x40;	// Data Input/Output
 	static const int STAT_NDM		= 0x20;	// Non-DMA Mode
-	static const int STAT_CB 		= 0x10;	// FDC Busy
+	static const int STAT_CB		= 0x10;	// FDC Busy
 	static const int STAT_D3B		= 0x08;	// FD3 Busy
 	static const int STAT_D2B		= 0x04;	// FD2 Busy
 	static const int STAT_D1B		= 0x02;	// FD1 Busy
@@ -100,25 +104,27 @@ struct FDC {
 	static const int ST3_US_MASK	= 0x03;	// Unit Select
 };
 
-class FDCDevice
-	: public IODevice
+class FDCDevice : public IODevice
 {
 	using inherited = IODevice;
- private:
+
 	static const int baseaddr = 0xe94000;
 
  public:
 	FDCDevice();
-	~FDCDevice() override;
+	virtual ~FDCDevice() override;
+
+	void ResetHard(bool poweron) override;
 
-	void ResetHard() override;
+	// 強制レディ
+	void SetForceReady(bool force_ready_);
 
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 4;
-	uint64 Read(uint32 addr);
-	uint64 Write(uint32 addr, uint32 data);
-	uint64 Peek(uint32 addr);
+	uint64 Read(uint32 offset);
+	uint64 Write(uint32 offset, uint32 data);
+	uint64 Peek(uint32 offset);
 
  private:
 	uint32 ReadStatus();
@@ -130,14 +136,18 @@ class FDCDevice
 	void exec_phase();
 	void result_phase();
 
+	void Callback(Event& ev);
+
+	void Interrupt();
+
+	bool interrupt {};	// 割り込みを出している間は true
+
 	struct FDC fdc {};
 	struct FDD fdd[4] {};
 
-	void Callback(int);
+	bool force_ready {};	// 強制レディ
 
-	void Interrupt();
-
-	Event event {};
+	Event event { this };
 
 	// コマンドを名前に変換
 	static const char *cmd2name(uint32);
@@ -145,3 +155,5 @@ class FDCDevice
 	// コマンド名一覧
 	static const char *cmdnames_str[];
 };
+
+extern FDCDevice *gFDC;