--- nono/vm/gvram.cpp	2026/04/29 17:04:28	1.1
+++ nono/vm/gvram.cpp	2026/04/29 17:05:10	1.1.1.6
@@ -1,38 +1,43 @@
 //
 // nono
-// Copyright (C) 2018 isaki@NetBSD.org
+// Copyright (C) 2020 nono project
+// Licensed under nono-license.txt
 //
 
-#include "gvram.h"
-#include "vicon.h"
-
 //
 // GVRAM
 //
+
 // GVRAM はワード単位でホストバイトオーダ配置なので、
 // バイトアクセス時は HB() マクロを使用のこと。
-//
 
+#include "gvram.h"
+#include "mpu.h"
+#include "videoctlr.h"
+
+// グローバル参照用
 GVRAMDevice *gGVRAM;
 
+// コンストラクタ
 GVRAMDevice::GVRAMDevice()
+	: inherited("GVRAM")
 {
-	logname = "gvram";
-	devname = "GVRAM";
 	devaddr = 0xc00000;
 	devlen  = 0x200000;	// XXX とりあえず
 
-	mem = new uint8[devlen];
+	mem.reset(new uint8[devlen]);
 }
 
+// デストラクタ
 GVRAMDevice::~GVRAMDevice()
 {
-	delete[] mem;
+	gGVRAM = NULL;
 }
 
 uint64
 GVRAMDevice::Read8(uint32 addr)
 {
+	gMPU->AddCycle(9);	// Inside/Out p.135
 	uint32 offset = addr - devaddr;
 	return mem[HB(offset)];
 }
@@ -40,6 +45,7 @@ GVRAMDevice::Read8(uint32 addr)
 uint64
 GVRAMDevice::Read16(uint32 addr)
 {
+	gMPU->AddCycle(9);	// Inside/Out p.135
 	uint32 offset = addr - devaddr;
 	return *(uint16 *)&mem[offset];
 }
@@ -47,6 +53,7 @@ GVRAMDevice::Read16(uint32 addr)
 uint64
 GVRAMDevice::Write8(uint32 addr, uint32 data)
 {
+	gMPU->AddCycle(9);	// Inside/Out p.135
 	uint32 offset = addr - devaddr;
 	mem[HB(offset)] = data;
 	return 0;
@@ -55,6 +62,7 @@ GVRAMDevice::Write8(uint32 addr, uint32
 uint64
 GVRAMDevice::Write16(uint32 addr, uint32 data)
 {
+	gMPU->AddCycle(9);	// Inside/Out p.135
 	uint32 offset = addr - devaddr;
 	*(uint16 *)&mem[offset] = data;
 	return 0;