--- nono/host/hostcom.cpp	2026/04/29 17:05:21	1.1.1.3
+++ nono/host/hostcom.cpp	2026/04/29 17:05:30	1.1.1.4
@@ -263,7 +263,7 @@ HostCOMDevice::Tx(uint32 data)
 	stat.tx_bytes++;
 
 	// ざっくりピーク値
-	stat.txq_peak = std::max((int)txq.Length(), stat.txq_peak);
+	stat.txq_peak = std::max((uint)txq.Length(), stat.txq_peak);
 
 	// パイプに通知 (値はダミー)
 	return WritePipe(0);
@@ -313,7 +313,7 @@ HostCOMDevice::Read()
 	}
 
 	// ざっくりピーク値
-	stat.rxq_peak = std::max((int)rxq.Length(), stat.rxq_peak);
+	stat.rxq_peak = std::max((uint)rxq.Length(), stat.rxq_peak);
 
 	return 1;
 }
@@ -364,8 +364,8 @@ HostCOMDevice::MonitorUpdate(Monitor *,
 	y++;
 
 	screen.Print(5, y++, "Capacity Peak");
-	screen.Print(0, y++, "TxQ %4d/%4d %4d",
-		(int)txq.Length(), (int)txq.Capacity(), stat.txq_peak);
-	screen.Print(0, y++, "RxQ %4d/%4d %4d",
-		(int)rxq.Length(), (int)rxq.Capacity(), stat.rxq_peak);
+	screen.Print(0, y++, "TxQ %4u/%4u %4u",
+		(uint)txq.Length(), (uint)txq.Capacity(), stat.txq_peak);
+	screen.Print(0, y++, "RxQ %4u/%4u %4u",
+		(uint)rxq.Length(), (uint)rxq.Capacity(), stat.rxq_peak);
 }