Index: trunk/core/main.c
===================================================================
--- trunk/core/main.c	(revision 1352)
+++ trunk/core/main.c	(revision 1441)
@@ -36,12 +36,7 @@
     fd = open(fn, O_WRONLY|O_CREAT, 0777);
     if (fd) {
-#ifdef CAMERA_ixus65_sd630    // Zero is not readable on ixus65!
-        write(fd, (int*)0xFFFF0000, 4);
-        write(fd, (int*)4, 0x1900-4);
-#else
-        write(fd, (void*)0, 0x1900);
-#endif
-        // TODO actual memory size is larger than 32 MB on many cameras!
-        write(fd, (void*)0x1900, 32*1024*1024-0x1900);
+        long val0 = *((long*)(0|CAM_UNCACHED_BIT));
+        write(fd, &val0, 4);
+        write(fd, (void*)4, MAXRAMADDR-3);   // MAXRAMADDR is last valid RAM location
         close(fd);
     }