--- nono/vm/pedec.cpp	2026/04/29 17:05:17	1.1.1.7
+++ nono/vm/pedec.cpp	2026/04/29 17:05:21	1.1.1.8
@@ -143,9 +143,9 @@ PEDECDevice::MonitorUpdate(TextScreen& s
 		int clz = __builtin_clz(map);
 		screen.Puts(4, y, TA::OnOff(intmap & map), table[i].name);
 		if (intr_level >= 1 || (intmap_enabled & map) == 0) {
-			screen.Puts(10, y, "Mask");
+			screen.Puts(11, y, "Mask");
 		}
-		screen.Print(14, y, "%26s", format_number(counter[clz]).c_str());
+		screen.Print(15, y, "%26s", format_number(counter[clz]).c_str());
 		y++;
 	}
 }
@@ -208,7 +208,7 @@ PEDECDevice::InterruptAcknowledge(int lv
 
 // デバイスから Intmap 値を引く
 uint32
-PEDECDevice::GetIntmap(Device *source) const
+PEDECDevice::GetIntmap(const Device *source) const
 {
 	if (__predict_true(source == spc)) {
 		return IntmapSPC;
@@ -216,7 +216,7 @@ PEDECDevice::GetIntmap(Device *source) c
 	if (__predict_true(source == fdc)) {
 		return IntmapFDC;
 	}
-	if (dynamic_cast<FDDDevice*>(source)) {
+	if (dynamic_cast<const FDDDevice*>(source)) {
 		return IntmapFDD;
 	}
 	VMPANIC("Unsupported interrupt device");