--- nono/vm/dipsw.cpp	2026/04/29 17:05:17	1.1.1.1
+++ nono/vm/dipsw.cpp	2026/04/29 17:05:38	1.1.1.3
@@ -30,27 +30,27 @@ DipswDevice::~DipswDevice()
 
 // 値を設定。true/false の意味は機種依存。
 void
-DipswDevice::Set(int n, bool val)
+DipswDevice::Set(uint n, bool val)
 {
-	assertmsg(0 <= n && n < dipsw.size(),
-		"n=%d size=%zd: out of range", n, dipsw.size());
+	assertmsg(n < dipsw.size(),
+		"n=%u size=%zu: out of range", n, dipsw.size());
 
 	dipsw[n] = val;
 }
 
 // 値を取得。true/false の意味は機種依存。
 bool
-DipswDevice::Get(int n) const
+DipswDevice::Get(uint n) const
 {
-	assertmsg(0 <= n && n < dipsw.size(),
-		"n=%d size=%zd: out of range", n, dipsw.size());
+	assertmsg(n < dipsw.size(),
+		"n=%u size=%zu: out of range", n, dipsw.size());
 
 	return dipsw[n];
 }
 
 // 位置を設定。pos は 0 が上、1 が下。
 void
-DipswDevice::SetPosition(int n, int pos)
+DipswDevice::SetPosition(uint n, uint pos)
 {
 	bool val;
 
@@ -64,7 +64,7 @@ DipswDevice::SetPosition(int n, int pos)
 
 // 位置を取得。戻り値は 0 が上、1 が下。
 int
-DipswDevice::GetPosition(int n) const
+DipswDevice::GetPosition(uint n) const
 {
 	bool val = Get(n);
 	int pos;
@@ -119,10 +119,6 @@ LunaDipswDevice::~LunaDipswDevice()
 bool
 LunaDipswDevice::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	const ConfigItem& item1 = gConfig->Find("luna-dipsw1");
 	const std::string& str1 = item1.AsString();
 	if (str1.size() != 8) {
@@ -198,10 +194,6 @@ NewsDipswDevice::~NewsDipswDevice()
 bool
 NewsDipswDevice::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	const ConfigItem& item = gConfig->Find("news-dipsw");
 	const std::string& str = item.AsString();
 	if (str.size() != 8) {