--- nono/vm/fdc.cpp	2026/04/29 17:04:35	1.1.1.4
+++ nono/vm/fdc.cpp	2026/04/29 17:04:41	1.1.1.5
@@ -30,12 +30,15 @@ void
 FDCDevice::ResetHard()
 {
 	// XXX 他には
+	event.Stop();
 	idle_phase();
 }
 
 uint64
 FDCDevice::Read(uint32 addr)
 {
+	gMPU->AddCycle(19);	// InsideOut p.135
+
 	switch (addr) {
 	 case 0:
 		return ReadStatus();
@@ -52,6 +55,8 @@ FDCDevice::Read(uint32 addr)
 uint64
 FDCDevice::Write(uint32 addr, uint32 data)
 {
+	gMPU->AddCycle(19);	// InsideOut p.135
+
 	switch (addr) {
 	 case 0:
 		return 0;
@@ -305,9 +310,9 @@ FDCDevice::result_phase()
 
 // イベントコールバック
 void
-FDCDevice::Callback(int arg)
+FDCDevice::Callback(Event& ev)
 {
-	switch (arg) {
+	switch (ev.code) {
 	 case FDC::CMD_RECALIBRATE:
 		fdd[fdc.accdrive].seek = false;
 		fdc.DIO = DIOtoHost;