--- nono/vm/bankram.cpp	2026/04/29 17:05:21	1.1
+++ nono/vm/bankram.cpp	2026/04/29 17:05:25	1.1.1.2
@@ -13,6 +13,7 @@
 
 #include "bankram.h"
 #include "config.h"
+#include "mainbus.h"
 
 // コンストラクタ
 BankRAMDevice::BankRAMDevice(int objid_, int ram_size_MB)
@@ -54,6 +55,9 @@ BankRAMDevice::ResetHard(bool poweron)
 
 	// リセットでクリアされる。
 	SetPage(0);
+
+	std::fill(accstat_read.begin(), accstat_read.end(), 0);
+	std::fill(accstat_write.begin(), accstat_write.end(), 0);
 }
 
 inline uint32
@@ -62,75 +66,81 @@ BankRAMDevice::Decoder(uint32 addr) cons
 	return pageaddr + (addr & 0xffff);
 }
 
-uint64
+busdata
 BankRAMDevice::Read8(uint32 addr)
 {
 	uint32 offset = Decoder(addr);
+	accstat_read[offset >> 20] = MainbusDevice::ACC_READ;
 	uint32 data = ram[HLB(offset)];
 	putlog(4, "$%08x.B -> $%02x", addr, data);
 	return data;
 }
 
-uint64
+busdata
 BankRAMDevice::Read16(uint32 addr)
 {
 	uint32 offset = Decoder(addr);
+	accstat_read[offset >> 20] = MainbusDevice::ACC_READ;
 	uint32 data = *(uint16 *)&ram[HLW(offset)];
 	putlog(4, "$%08x.W -> $%04x", addr, data);
 	return data;
 }
 
-uint64
+busdata
 BankRAMDevice::Read32(uint32 addr)
 {
 	uint32 offset = Decoder(addr);
+	accstat_read[offset >> 20] = MainbusDevice::ACC_READ;
 	uint32 data = *(uint32 *)&ram[offset];
 	putlog(4, "$%08x.L -> $%08x", addr, data);
 	return data;
 }
 
-uint64
+busdata
 BankRAMDevice::Write8(uint32 addr, uint32 data)
 {
 	uint32 offset = Decoder(addr);
+	accstat_write[offset >> 20] = MainbusDevice::ACC_WRITE;
 	ram[HLB(offset)] = data;
 	putlog(3, "$%08x.B <- $%02x", addr, data);
 	return 0;
 }
 
-uint64
+busdata
 BankRAMDevice::Write16(uint32 addr, uint32 data)
 {
 	uint32 offset = Decoder(addr);
+	accstat_write[offset >> 20] = MainbusDevice::ACC_WRITE;
 	*(uint16 *)&ram[HLW(offset)] = data;
 	putlog(3, "$%08x.W <- $%04x", addr, data);
 	return 0;
 }
 
-uint64
+busdata
 BankRAMDevice::Write32(uint32 addr, uint32 data)
 {
 	uint32 offset = Decoder(addr);
+	accstat_write[offset >> 20] = MainbusDevice::ACC_WRITE;
 	*(uint32 *)&ram[offset] = data;
 	putlog(3, "$%08x.L <- $%08x", addr, data);
 	return 0;
 }
 
-uint64
+busdata
 BankRAMDevice::Peek8(uint32 addr)
 {
 	uint32 offset = Decoder(addr);
 	return ram[HLB(offset)];
 }
 
-uint64
+bool
 BankRAMDevice::Poke8(uint32 addr, uint32 data)
 {
 	if ((int32)data >= 0) {
 		uint32 offset = Decoder(addr);
 		ram[HLB(offset)] = data;
 	}
-	return 0;
+	return true;
 }
 
 void
@@ -142,3 +152,19 @@ BankRAMDevice::SetPage(uint32 page_)
 
 	putlog(2, "Page <- $%02x", page);
 }
+
+void
+BankRAMDevice::FetchAccStat(uint8 *acc)
+{
+	// R|W をマージしながらコピー。
+	for (int i = 0; i < accstat_read.size(); i += 4) {
+		uint32 tmp = 0;
+		tmp |= *(uint32 *)&accstat_read[i];
+		tmp |= *(uint32 *)&accstat_write[i];
+		*(uint32 *)&acc[i] = tmp;
+	}
+
+	// 読んだのでリセット。
+	std::fill(accstat_read.begin(), accstat_read.end(), 0);
+	std::fill(accstat_write.begin(), accstat_write.end(), 0);
+}