--- nono/vm/areaset.cpp	2026/04/29 17:05:17	1.1.1.8
+++ nono/vm/areaset.cpp	2026/04/29 17:06:00	1.1.1.13
@@ -9,7 +9,9 @@
 //
 
 #include "areaset.h"
-#include "mpu.h"
+#include "event.h"
+#include "mainbus.h"
+#include "x68kio.h"
 
 // コンストラクタ
 AreaSetDevice::AreaSetDevice()
@@ -22,58 +24,53 @@ AreaSetDevice::~AreaSetDevice()
 {
 }
 
+// 初期化
+bool
+AreaSetDevice::Init()
+{
+	x68kio = GetX68kIODevice();
+
+	return true;
+}
+
 // リセット
 void
 AreaSetDevice::ResetHard(bool poweron)
 {
-	limit = 0;
+	// リセットでどうなるかは分からないけど、
+	// さすがに不定ではないだろう。
+	x68kio->SetAreaset(0);
 }
 
-uint64
-AreaSetDevice::Read8(uint32 addr)
+busdata
+AreaSetDevice::ReadPort(uint32 offset)
 {
-	switch (addr) {
-	 case 0xe86001:
-		return limit;
-	}
-	return (uint64)-1;
+	putlog(2, "Read $%06x (BusErr)", GetMainbusDevice()->GetPaddr());
+	return BusData::BusErr;
 }
 
-uint64
-AreaSetDevice::Read16(uint32 addr)
-{
-	return 0xff00 | Read8(addr + 1);
-}
 
-uint64
-AreaSetDevice::Write8(uint32 addr, uint32 data)
+busdata
+AreaSetDevice::WritePort(uint32 offset, uint32 data)
 {
-	mpu->AddCycle(7);	// InsideOut p.135
+	putlog(1, "Write $%06x <- $%02x", GetMainbusDevice()->GetPaddr(), data);
+	x68kio->SetAreaset(data);
 
-	switch (addr) {
-	 case 0xe86001:
-		putlog(0, "Write $%02x (NOT IMPLEMENTED)", data);
-		limit = data;
-		return 0;
-	 default:
-		break;
-	}
-	return (uint64)-1;
+	const busdata wait = busdata::Wait(7 * 40_nsec);
+	busdata r = wait;
+	r |= BusData::Size1;
+	return r;
 }
 
-uint64
-AreaSetDevice::Write16(uint32 addr, uint32 data)
+busdata
+AreaSetDevice::PeekPort(uint32 offset)
 {
-	return Write8(addr + 1, data);
+	return BusData::BusErr;
 }
 
-uint64
-AreaSetDevice::Peek8(uint32 addr)
+bool
+AreaSetDevice::PokePort(uint32 offset, uint32 data)
 {
-	switch (addr) {
-	 case 0xe86001:
-		return limit;
-	 default:
-		return 0xff;
-	}
+	// とりあえず
+	return false;
 }