diff --git a/libc_impl.c b/libc_impl.c
index 730fbf4..1b1dc41 100755
--- a/libc_impl.c
+++ b/libc_impl.c
@@ -43,7 +43,7 @@
         param[i] = MEM_S8(param##_addr + i); \
     }
 
-#if !defined(IDO53) && !defined(IDO71)
+#if !defined(IDO53) && !defined(IDO71) && !defined(IDO72)
 #define IDO71
 #endif
 
@@ -68,6 +68,15 @@
 #define LIBC_SIZE 0x3000
 #endif
 
+#ifdef IDO72
+// IDO 7.2
+#define IOB_ADDR   0x0fb49454
+#define ERRNO_ADDR 0x0fb49290
+#define CTYPE_ADDR 0x0fb46db0
+#define LIBC_ADDR  0x0fb46000
+#define LIBC_SIZE  0x4000
+#endif
+
 #define STDIN_ADDR IOB_ADDR
 #define STDOUT_ADDR (IOB_ADDR + 0x10)
 #define STDERR_ADDR (IOB_ADDR + 0x20)