--- nono/vm/busio.h	2026/04/29 17:04:55	1.1.1.4
+++ nono/vm/busio.h	2026/04/29 17:05:10	1.1.1.5
@@ -295,7 +295,7 @@ class BusIO_WW : public T
 	}
 
 	uint64 Write8(uint32 addr, uint32 data) override {
-		PANIC("not implemented\n");
+		VMPANIC("not implemented");
 		return (int64)-1;	// XXX 未確認
 	}
 	uint64 Write16(uint32 addr, uint32 data) override {
@@ -341,7 +341,7 @@ class BusIO_WF : public T
 	}
 
 	uint64 Write8(uint32 addr, uint32 data) override {
-		PANIC("not implemented\n");
+		VMPANIC("not implemented");
 		return 0;	// XXX 未確認
 	}
 	uint64 Write16(uint32 addr, uint32 data) override {