diff --git a/libisoburn/isoburn.c b/libisoburn/isoburn.c
index 48ef6093..b2152e07 100644
--- a/libisoburn/isoburn.c
+++ b/libisoburn/isoburn.c
@@ -1164,7 +1164,7 @@ int isoburn_igopt_set_system_area(struct isoburn_imgen_opts *opts,
    }
    memcpy(opts->system_area_data, data, 32768);
  }
- opts->system_area_options = options & 3;
+ opts->system_area_options = options & 0xff;
  return(1);
 }
 
diff --git a/libisoburn/libisoburn.h b/libisoburn/libisoburn.h
index 3d267b61..14aac21e 100644
--- a/libisoburn/libisoburn.h
+++ b/libisoburn/libisoburn.h
@@ -1234,6 +1234,16 @@ int isoburn_igopt_get_scdbackup_tag(struct isoburn_imgen_opts *o,
                           SYSLINUX plus an ISOLINUX boot image (see
                           iso_image_set_boot_image()) and only if not bit0
                           is set.
+                    bit2-7= System area type
+                          0= with bit0 or bit1: MBR
+                             else: unspecified type 
+                          @since 0.6.4
+                          1= MIPS Big Endian Volume Header
+                   >>> EXPERIMENTAL:
+                   Submit MIPS boot image files as El Torito Boot image to
+                   iso_image_set_boot_image() , iso_image_add_boot_image().
+                   No El Torito info will be produced with system area type 1.
+
     @return 1 success, 0 no data to get, <0 failure
 */
 int isoburn_igopt_set_system_area(struct isoburn_imgen_opts *o,
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index e215a32d..1cf98775 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2010.10.08.093338"
+#define Xorriso_timestamP "2010.10.12.103027"