diff --git a/SNPS_PT/SCRIPT/generate_sdf.tcl b/SNPS_PT/SCRIPT/generate_sdf.tcl
index e9a605e..c23c2e4 100644
--- a/SNPS_PT/SCRIPT/generate_sdf.tcl
+++ b/SNPS_PT/SCRIPT/generate_sdf.tcl
@@ -6,20 +6,21 @@
 ##################################
 # Define environment variables
 set SKYWATER_PDK_HOME "../../PDK/skywater-pdk";
-set FPGA_NETLIST_HOME "../../FPGA1212_FC_HD_SKY_PNR/fpga_core";
+#set FPGA_NETLIST_HOME "../../FPGA1212_FC_HD_SKY_PNR/fpga_top";
+set FPGA_NETLIST_HOME "/research/ece/lnis/USERS/DARPA_ERI/Tapeout/Nov2020_Skywater/FPGA1212_FLAT_HD_SKY_PNR/fpga_top";
 set SDF_HOME "../../SDF"
 #
 # Enable reporting ALL the timing paths even those are NOT constrained
 set_app_var svr_enable_vpp true
 
-set search_path ". * ${SKYWATER_PDK_HOME}/vendor/synopsys/results/lib/skywater130_fd_sc_hd/db_nldm"
+set search_path ". * ${SKYWATER_PDK_HOME}/vendor/synopsys/results/lib/sky130_fd_sc_hd/db_nldm"
 
 set link_path "* sky130_fd_sc_hd__tt_025C_1v80.db"
 
 # Top-level module name
-set DESIGN_NAME fpga_core;
+set DESIGN_NAME fpga_top;
 
-set FPGA_NETLIST_FILES "fpga_core_icv_in_design.pt.v"
+set FPGA_NETLIST_FILES "fpga_top_icv_in_design.pt.v"
 
 ##################################
 # Read timing libraries
@@ -30,15 +31,20 @@ read_db "${SKYWATER_PDK_HOME}/vendor/synopsys/results/lib/sky130_fd_sc_hd/db_nld
 read_verilog ${FPGA_NETLIST_HOME}/${FPGA_NETLIST_FILES}
 link_design ${DESIGN_NAME}
 
+#########################################
+# Setup constraints to break combinational loops
+set_disable_timing [get_pins */*/*chan*]
+set_disable_timing [get_pins */*/*grid_pin*]
+
 ##################################
 # Read post-PnR parasitics
-read_parasitics ${FPGA_NETLIST_HOME}/fpga_core_icv_in_design.nominal_25.spef
+read_parasitics ${FPGA_NETLIST_HOME}/fpga_top_icv_in_design.nominal_25.spef
 
 ##################################
 # Write sdf file
-write_sdf -version 3.0 ${SDF_HOME}/FPGA1212_FC_HD_SKY_PNR/fpga_core_icv_in_design.pt.sdf
+write_sdf -version 3.0 ${SDF_HOME}/FPGA1212_FC_HD_SKY_PNR/fpga_top_icv_in_design.pt.sdf
 
 ##################################
 # Finish and quit 
 # Comment it out if you want to debug
-#exit
+exit