diff --git a/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst b/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst
index ac0ea71..11cc07d 100644
--- a/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst
+++ b/projects/mips_sys/ise101/mips_sys/project/mips_sys.xst
@@ -41,7 +41,7 @@ run
 -rom_style Auto
 -auto_bram_packing NO
 -mux_extract YES
--resource_sharing NO
+-resource_sharing YES
 -async_to_sync NO
 -use_dsp48 auto
 -iobuf YES
@@ -49,14 +49,12 @@ run
 -bufg 32
 -bufr 24
 -register_duplication YES
--register_balancing Yes
--move_first_stage YES
--move_last_stage YES
+-register_balancing No
 -slice_packing YES
 -optimize_primitives NO
 -use_clock_enable Auto
 -use_sync_set Auto
 -use_sync_reset Auto
--iob true
+-iob auto
 -equivalent_register_removal YES
 -slice_utilization_ratio_maxmargin 5