--- nono/vm/sysport.cpp	2026/04/29 17:04:42	1.1.1.4
+++ nono/vm/sysport.cpp	2026/04/29 17:04:56	1.1.1.7
@@ -10,10 +10,13 @@
 #include "romimg_x68k.h"
 #include "sram.h"
 
+std::unique_ptr<SysportDevice> gSysport;
+
 SysportDevice::SysportDevice()
+	: inherited("SystemPort")
 {
-	logname = "sysport";
-	devname = "Sysport";
+	AddAlias("SysPort");
+
 	devaddr = baseaddr;
 	devlen  = 0x2000;
 }
@@ -25,16 +28,18 @@ SysportDevice::~SysportDevice()
 void
 SysportDevice::ResetHard()
 {
+	sysport.contrast = 0;	// XXX 未調査
 	sysport.ram_wait = 0;
 	sysport.rom_wait = 0;
+	sysport.key_ctrl = false;
 }
 
 uint64
-SysportDevice::Read(uint32 addr)
+SysportDevice::Read(uint32 offset)
 {
 	uint32 data;
 
-	switch (addr) {
+	switch (offset) {
 	 case SYSPORT::CONTRAST:
 		data = 0xf0 | sysport.contrast;
 		break;
@@ -63,14 +68,14 @@ SysportDevice::Read(uint32 addr)
 	 default:
 		__unreachable();
 	}
-	putlog(1, "$%06X -> $%02x", addr, data);
+	putlog(1, "$%06X -> $%02x", gMPU->GetPaddr(), data);
 	return data;
 }
 
 uint64
-SysportDevice::Write(uint32 addr, uint32 data)
+SysportDevice::Write(uint32 offset, uint32 data)
 {
-	switch (addr) {
+	switch (offset) {
 	 case SYSPORT::CONTRAST:
 		sysport.contrast = data & 15;
 		break;
@@ -85,8 +90,7 @@ SysportDevice::Write(uint32 addr, uint32
 		if ((data & 0x06)) {
 			putlog(0, "$E8E007 未サポート書き込み $%02x", data);
 		}
-		// bit3 KEY CTRL は MFP で管理する
-		gMFP->SetKeyCtrl(data & 0x08);
+		sysport.key_ctrl = (data & 0x08);
 		break;
 
 	 case SYSPORT::WAIT:
@@ -119,7 +123,7 @@ SysportDevice::Write(uint32 addr, uint32
 		break;
 
 	 case SYSPORT::POWEROFF:
-		putlog(0, "$E8E00F (POWEROFF) 未サポート書き込み %02x", data);
+		putlog(0, "$e8e00f (POWEROFF) 未サポート書き込み %02x", data);
 		break;
 
 	 default:
@@ -129,11 +133,11 @@ SysportDevice::Write(uint32 addr, uint32
 }
 
 uint64
-SysportDevice::Peek(uint32 addr)
+SysportDevice::Peek(uint32 offset)
 {
 	uint32 data;
 
-	switch (addr) {
+	switch (offset) {
 	 case SYSPORT::CONTRAST:
 		data = 0xf0 | sysport.contrast;
 		break;