--- nono/vm/mfp.cpp	2026/04/29 17:04:55	1.1.1.10
+++ nono/vm/mfp.cpp	2026/04/29 17:04:59	1.1.1.11
@@ -19,7 +19,7 @@ MFPDevice::MFPDevice()
 	devaddr = baseaddr;
 	devlen  = 0x2000;
 
-	for (int ch = 0; ch < countof(event); ch++) {
+	for (int ch = 0; ch < event.size(); ch++) {
 		event[ch].dev = this;
 		event[ch].func = (DeviceCallback_t)&MFPDevice::TimerCallback;
 		event[ch].code = ch;
@@ -63,8 +63,8 @@ MFPDevice::ResetHard()
 	mfp.tsr = MFP::TSR_BE;
 
 	// All timers are stopped.
-	for (int ch = 0; ch < countof(event); ch++) {
-		event[ch].Stop();
+	for (auto& ev : event) {
+		ev.Stop();
 	}
 	key_event.Stop();