--- nono/vm/crtc2.cpp	2026/04/29 17:04:41	1.1.1.5
+++ nono/vm/crtc2.cpp	2026/04/29 17:04:50	1.1.1.6
@@ -7,6 +7,8 @@
 #include "crtc2.h"
 #include "renderer.h"
 
+std::unique_ptr<CRTC2Device> gCRTC2;
+
 CRTC2Device::CRTC2Device()
 {
 	logname = "crtc2";
@@ -41,11 +43,11 @@ CRTC2Device::ResetHard()
 }
 
 uint64
-CRTC2Device::Read(uint32 addr)
+CRTC2Device::Read(uint32 offset)
 {
 	uint32 data;
 
-	switch (addr) {
+	switch (offset) {
 	 case 0:	// アドレスレジスタ
 		// アドレスレジスタは書き込み専用
 		// XXX 何が読めるか
@@ -84,9 +86,9 @@ CRTC2Device::Read(uint32 addr)
 }
 
 uint64
-CRTC2Device::Write(uint32 addr, uint32 data)
+CRTC2Device::Write(uint32 offset, uint32 data)
 {
-	switch (addr) {
+	switch (offset) {
 	 case 0:	// アドレスレジスタ
 		ar = data & 0x3f;
 		putlog(3, "アドレスレジスタ <- $%02x", ar);
@@ -117,9 +119,9 @@ CRTC2Device::Write(uint32 addr, uint32 d
 }
 
 uint64
-CRTC2Device::Peek(uint32 addr)
+CRTC2Device::Peek(uint32 offset)
 {
-	switch (addr) {
+	switch (offset) {
 	 case 0:	// アドレスレジスタ
 		return ar;