--- nono/vm/mpscc.cpp	2026/04/29 17:05:17	1.1.1.3
+++ nono/vm/mpscc.cpp	2026/04/29 17:05:21	1.1.1.4
@@ -86,7 +86,7 @@ MPSCCDevice::MPSCCDevice()
 MPSCCDevice::~MPSCCDevice()
 {
 	if ((bool)hostcom) {
-		hostcom->SetCallbackDevice(NULL);
+		hostcom->SetRxCallback(NULL);
 	}
 }
 
@@ -94,14 +94,11 @@ bool
 MPSCCDevice::Create()
 {
 	// 対応するホストドライバを作成
-	try {
-		hostcom.reset(new HostCOMDevice("HostCOM"));
-	} catch (...) {
+	hostcom.reset(new HostCOMDevice(this, "HostCOM"));
+	if ((bool)hostcom == false) {
 		return false;
 	}
-
 	hostcom->SetRxCallback(ToDeviceCallback(&MPSCCDevice::HostRxCallback));
-	hostcom->SetCallbackDevice(this);
 
 	return true;
 }