--- nono/vm/gvram.cpp	2026/04/29 17:04:35	1.1.1.3
+++ nono/vm/gvram.cpp	2026/04/29 17:04:55	1.1.1.5
@@ -5,6 +5,7 @@
 //
 
 #include "gvram.h"
+#include "mpu.h"
 #include "videoctlr.h"
 
 //
@@ -17,9 +18,8 @@
 std::unique_ptr<GVRAMDevice> gGVRAM;
 
 GVRAMDevice::GVRAMDevice()
+	: inherited("GVRAM")
 {
-	logname = "gvram";
-	devname = "GVRAM";
 	devaddr = 0xc00000;
 	devlen  = 0x200000;	// XXX とりあえず
 
@@ -33,6 +33,7 @@ GVRAMDevice::~GVRAMDevice()
 uint64
 GVRAMDevice::Read8(uint32 addr)
 {
+	gMPU->AddCycle(9);	// Inside/Out p.135
 	uint32 offset = addr - devaddr;
 	return mem[HB(offset)];
 }
@@ -40,6 +41,7 @@ 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 +49,7 @@ 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 +58,7 @@ 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;