Merge pull request #403 from os-fpga/lec_sim

added setup_lec_sim for asyncfifo and asynchronous_master_spi

Author: NadeemYaseen

RTL_testcases/RTL_Benchmarks_Gap_Analysis/asyncfifo/raptor_run.sh

@@ -260,6 +260,9 @@ parse_cga exit 1; }
         else
             echo ""
         fi
+    echo "setup_lec_sim 10 2">>raptor_tcl.tcl  
+    echo "simulate gate icarus">>raptor_tcl.tcl || echo "simulate gate verilator">>raptor_tcl.tcl 
+    echo "simulate pnr icarus">>raptor_tcl.tcl || echo "simulate pnr verilator">>raptor_tcl.tcl 
     echo "sta">>raptor_tcl.tcl  
     echo "power">>raptor_tcl.tcl  
     echo "bitstream $bitstream">>raptor_tcl.tcl  

RTL_testcases/RTL_Benchmarks_Gap_Analysis/asynchronous_master_spi/raptor_run.sh

@@ -258,6 +258,9 @@ parse_cga exit 1; }
         else
             echo ""
         fi
+    echo "setup_lec_sim 10 2">>raptor_tcl.tcl  
+    echo "simulate gate icarus">>raptor_tcl.tcl || echo "simulate gate verilator">>raptor_tcl.tcl 
+    echo "simulate pnr icarus">>raptor_tcl.tcl || echo "simulate pnr verilator">>raptor_tcl.tcl 
     echo "sta">>raptor_tcl.tcl  
     echo "power">>raptor_tcl.tcl  
     echo "bitstream $bitstream">>raptor_tcl.tcl  

RTL_testcases/RTL_Benchmarks_Gap_Analysis/asynchronous_master_spi/rtl/spi_master.v

@@ -254,7 +254,7 @@ begin
         charreceivedn <= ~charreceivedn;
 end
 
-assign data = (rd) ? output_buffer : {WORD_LEN{1'bz}};
+assign data = (rd) ? output_buffer : {WORD_LEN{1'b0}};
 
 assign sck = (modeint[1])? ~sckint : sckint;
 assign mosi = (ss) ? 1'b1:_mosi;