diff --git a/maplebus.h b/maplebus.h
index 2511d8b..052c71f 100644
--- a/maplebus.h
+++ b/maplebus.h
@@ -5,10 +5,12 @@
  * http://mc.pp.se/dc/maplebus.html
  */
 
-#define MAPLE_CMD_RQ_DEV_INFO	1
-#define MAPLE_CMD_RESET_DEVICE	3
-#define MAPLE_CMD_GET_CONDITION	9
-#define MAPLE_CMD_BLOCK_WRITE	12
+#define MAPLE_CMD_RQ_DEV_INFO		1
+#define MAPLE_CMD_RQ_EXT_DEV_INFO	2
+#define MAPLE_CMD_RESET_DEVICE		3
+#define MAPLE_CMD_SHUTDOWN_DEV		4
+#define MAPLE_CMD_GET_CONDITION		9
+#define MAPLE_CMD_BLOCK_WRITE		12
 
 #define MAPLE_FUNC_CONTROLLER	0x001
 #define MAPLE_FUNC_MEMCARD		0x002