--- nono/vm/printer.h	2026/04/29 17:04:36	1.1.1.2
+++ nono/vm/printer.h	2026/04/29 17:05:50	1.1.1.10
@@ -4,24 +4,33 @@
 // Licensed under nono-license.txt
 //
 
+//
+// プリンタポート
+//
+
 #pragma once
 
 #include "device.h"
 
-class PrinterDevice
-	: public IODevice
+class PrinterDevice : public IODevice
 {
 	using inherited = IODevice;
- private:
-	static const int baseaddr = 0xe8c000;
+
+	static const uint32 baseaddr = 0xe8c000;
 
  public:
 	PrinterDevice();
 	~PrinterDevice() 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;
+ protected:
+	// BusIO インタフェース
+	// XXX まだ調べてない
+	static const uint32 NPORT = 2;
+	busdata ReadPort(uint32 offset);
+	busdata WritePort(uint32 offset, uint32 data);
+	busdata PeekPort(uint32 offset);
+	bool PokePort(uint32 offset, uint32 data);
+
+ private:
+	static const busdata wait;
 };