--- nono/vm/printer.cpp	2026/04/29 17:04:36	1.1.1.2
+++ nono/vm/printer.cpp	2026/04/29 17:05:25	1.1.1.9
@@ -4,58 +4,77 @@
 // Licensed under nono-license.txt
 //
 
+//
+// プリンタポート
+//
+
 #include "printer.h"
+#include "mpu.h"
+
+// InsideOut p.135
+static const busdata wait = busdata::Wait(7 * 40_nsec);
 
+// コンストラクタ
 PrinterDevice::PrinterDevice()
+	: inherited(OBJ_PRINTER)
 {
-	logname = "printer";
-	devname = "Printer";
-	devaddr = baseaddr;
-	devlen  = 0x2000;
 }
 
+// デストラクタ
 PrinterDevice::~PrinterDevice()
 {
 }
 
-uint64
+busdata
 PrinterDevice::Read8(uint32 addr)
 {
 	// 書き込み専用
-	return (uint64)-1;
+	busdata data = busdata::BusErr;
+	data |= wait;
+	return data;
 }
 
-uint64
+busdata
 PrinterDevice::Read16(uint32 addr)
 {
 	// 書き込み専用
-	return (uint64)-1;
+	busdata data = busdata::BusErr;
+	data |= wait;
+	return data;
 }
 
-uint64
+busdata
 PrinterDevice::Write8(uint32 addr, uint32 data)
 {
 	uint32 offset = addr - baseaddr;
+	busdata r;
+
 	switch (offset) {
 	 case 0:
-		putlog(0, "未実装データ書き込み");
+		// データ書き込み
+		putlog(0, "Write Data (NOT IMPLEMENTED)");
+		r.SetBusErr();
 		break;
 	 case 3:
-		putlog(0, "未実装ストローブ書き込み");
-		return 0;
+		// ストローブ書き込み
+		putlog(0, "Write Strobe (NOT IMPLEMENTED)");
+		r = 0;
+		break;
 	 default:
 		break;
 	}
-	return (uint64)-1;
+
+	r |= wait;
+	return r;
 }
 
-uint64
+busdata
 PrinterDevice::Write16(uint32 addr, uint32 data)
 {
 	return Write8(addr + 1, data);
 }
 
-uint64
+busdata
 PrinterDevice::Peek8(uint32 addr)
 {
 	// XXX