--- nono/vm/sysport.cpp	2026/04/29 17:05:32	1.1.1.14
+++ nono/vm/sysport.cpp	2026/04/29 17:05:59	1.1.1.16
@@ -10,9 +10,9 @@
 
 #include "sysport.h"
 #include "keyboard.h"
+#include "mainbus.h"
 #include "mainram.h"
 #include "monitor.h"
-#include "mpu.h"
 #include "nmi.h"
 #include "power.h"
 #include "romimg_x68k.h"
@@ -25,7 +25,7 @@ SysportDevice::SysportDevice()
 	: inherited(OBJ_SYSPORT)
 {
 	monitor = gMonitorManager->Regist(ID_MONITOR_SYSPORT, this);
-	monitor->func = ToMonitorCallback(&SysportDevice::MonitorUpdate);
+	monitor->SetCallback(&SysportDevice::MonitorScreen);
 	monitor->SetSize(56, 8);
 }
 
@@ -38,10 +38,6 @@ SysportDevice::~SysportDevice()
 bool
 SysportDevice::Init()
 {
-	if (inherited::Init() == false) {
-		return false;
-	}
-
 	cgrom = GetCGROMDevice();
 	iplrom1 = GetIPLROM1Device();
 	iplrom2 = GetIPLROM2Device();
@@ -71,7 +67,7 @@ SysportDevice::ReadPort(uint32 offset)
 	busdata data;
 
 	data = PeekPort(offset);
-	putlog(2, "$%06x -> $%02x", mpu->GetPaddr(), data.Data());
+	putlog(2, "$%06x -> $%02x", GetMainbusDevice()->GetPaddr(), data.Data());
 
 	data |= BusData::Size1;
 	return data;
@@ -219,7 +215,7 @@ SysportDevice::PokePort(uint32 offset, u
 }
 
 void
-SysportDevice::MonitorUpdate(Monitor *, TextScreen& screen)
+SysportDevice::MonitorScreen(Monitor *, TextScreen& screen)
 {
 	screen.Clear();