add top_count solutions

1 files changed, 5 insertions, 1 deletions

diff --git a/src/cnt1sec.vhd b/src/cnt1sec.vhd
index a722ff9..14fad68 100644
--- a/src/cnt1sec.vhd
+++ b/src/cnt1sec.vhd
@@ -10,7 +10,11 @@ entity cnt1sec is
 end entity;
 
 architecture rtl of cnt1sec is
+  signal cnt, ncnt : unsigned(25 downto 0);
 begin
-
+  cnt <= (others => '0') when rst_n = '0' else ncnt when rising_edge(clk);
+  ncnt <= to_unsigned(0,cnt'length) when cnt = 4 else
+          cnt + 1;
+  en_o <= '1' when cnt = 0 else '0';
 end architecture rtl;