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Diffstat (limited to 'testsuite/vests/vhdl-ams/ashenden/compliant/sequential-statements/counter-1.vhd')
-rw-r--r-- | testsuite/vests/vhdl-ams/ashenden/compliant/sequential-statements/counter-1.vhd | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-ams/ashenden/compliant/sequential-statements/counter-1.vhd b/testsuite/vests/vhdl-ams/ashenden/compliant/sequential-statements/counter-1.vhd new file mode 100644 index 000000000..359a22ead --- /dev/null +++ b/testsuite/vests/vhdl-ams/ashenden/compliant/sequential-statements/counter-1.vhd @@ -0,0 +1,47 @@ + +-- Copyright (C) 2002 Morgan Kaufmann Publishers, Inc + +-- This file is part of VESTs (Vhdl tESTs). + +-- VESTs is free software; you can redistribute it and/or modify it +-- under the terms of the GNU General Public License as published by the +-- Free Software Foundation; either version 2 of the License, or (at +-- your option) any later version. + +-- VESTs is distributed in the hope that it will be useful, but WITHOUT +-- ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or +-- FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License +-- for more details. + +-- You should have received a copy of the GNU General Public License +-- along with VESTs; if not, write to the Free Software Foundation, +-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +entity counter is + port ( clk, reset : in bit; count : out natural ); +end entity counter; + +-------------------------------------------------- + +architecture behavior of counter is +begin + + incrementer : process is + variable count_value : natural := 0; + begin + count <= count_value; + loop + loop + wait until clk = '1' or reset = '1'; + exit when reset = '1'; + count_value := (count_value + 1) mod 16; + count <= count_value; + end loop; + -- at this point, reset = '1' + count_value := 0; + count <= count_value; + wait until reset = '0'; + end loop; + end process incrementer; + +end architecture behavior; |