fix hold time violations in .sdc

2016-07-28 21:05:55 +00:00
parent 4e6efb55fc
commit 479861c1c0
5 changed files with 919 additions and 917 deletions
--- a/FPGA_Quartus_13.1/firebee_groups.sdc
+++ b/FPGA_Quartus_13.1/firebee_groups.sdc
@@ -193,3 +193,10 @@ set_clock_groups -asynchronous -group [get_clocks {MAIN_CLK}] \
 #**************************************************************
 # Set Input Transition
 #**************************************************************
+
+if { [string equal "quartus_fit" $::TimeQuestInfo(nameofexecutable)] } {
+    post_message -type info "Over constraining hold"
+    set_clock_uncertainty -add -enable_same_physical_edge -from { MAIN_CLK } -to { MAIN_CLK } -hold 0.2
+}
+
+