--- nono/vm/pedec.h	2026/04/29 17:05:20	1.1.1.8
+++ nono/vm/pedec.h	2026/04/29 17:05:24	1.1.1.9
@@ -10,12 +10,8 @@
 
 #pragma once
 
-#include "device.h"
 #include "interrupt.h"
 
-class FDCDevice;
-class SPCDevice;
-
 class PEDECDevice : public InterruptDevice
 {
 	using inherited = InterruptDevice;
@@ -23,26 +19,27 @@ class PEDECDevice : public InterruptDevi
 	static const int baseaddr = 0xe9c000;
 
  public:
-	// intmap が下位デバイスからの割り込み信号線 (%1 でアサート)。
-	// intmap_enabled がマスク (%1 なら割り込み許可)。
-	// よって二者を AND とれば上位に割り込みを上げるかどうかが求まる。
-	// SPC からの割り込みはここでマスク制御しないので intmap_enabled には
+	// SPC からの割り込みはここでマスク制御しないので intmap_enable には
 	// IntmapSPC を常に立てておくこと。
-	static const uint32 IntmapSPC = 0x0100;
-	static const uint32 IntmapFDC = 0x0080;
-	static const uint32 IntmapFDD = 0x0040;
-	static const uint32 IntmapHDD = 0x0020;
-	static const uint32 IntmapPRT = 0x0010;
+	static const uint32 IntmapSPC	= 0x1000;
+	static const uint32 IntmapFDC	= 0x0080;
+	static const uint32 IntmapFDD0	= 0x0800;
+	static const uint32 IntmapFDD1	= 0x0400;
+	static const uint32 IntmapFDD2	= 0x0200;
+	static const uint32 IntmapFDD3	= 0x0100;
+	static const uint32 IntmapFDD	= 0x0f00;	// FDD(0|1|2|3)
+	static const uint32 IntmapHDD	= 0x0020;
+	static const uint32 IntmapPRT	= 0x0010;
 
  public:
 	PEDECDevice();
-	virtual ~PEDECDevice() override;
+	~PEDECDevice() override;
 
 	bool Init() override;
 	void ResetHard(bool poweron) override;
 
 	// InterruptDevice インタフェース
-	int InterruptAcknowledge(int lv) override;
+	busdata InterruptAcknowledge(int lv) override;
 
 	// 割り込みコントローラからのモニタ表示
 	void MonitorUpdate(TextScreen& screen, uint intr_level, int y);
@@ -50,25 +47,20 @@ class PEDECDevice : public InterruptDevi
  protected:
 	// BusIO インタフェース
 	static const uint32 NPORT = 8;
-	uint64 Read(uint32 offset);
-	uint64 Write(uint32 offset, uint32 data);
-	uint64 Peek(uint32 offset);
+	busdata Read(uint32 offset);
+	busdata Write(uint32 offset, uint32 data);
+	busdata Peek(uint32 offset);
 
  private:
-	uint32 GetIntmap(const Device *source) const override;
-
 	// 割り込みステータスレジスタの値を取得
 	uint32 GetStat() const;
 
 	// 割り込み信号線の状態を変える
 	void ChangeInterrupt() override;
 
-	uint32 intmap_enabled {};
 	uint8 vector {};
 
-	FDCDevice *fdc {};
 	InterruptDevice *interrupt {};
-	SPCDevice *spc {};
 };
 
 static inline PEDECDevice *GetPEDECDevice() {