diff options
Diffstat (limited to 'testsuite/vests/vhdl-ams/ashenden/compliant/design-processing/dff.vhd')
-rw-r--r-- | testsuite/vests/vhdl-ams/ashenden/compliant/design-processing/dff.vhd | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-ams/ashenden/compliant/design-processing/dff.vhd b/testsuite/vests/vhdl-ams/ashenden/compliant/design-processing/dff.vhd new file mode 100644 index 0000000..9532e9c --- /dev/null +++ b/testsuite/vests/vhdl-ams/ashenden/compliant/design-processing/dff.vhd @@ -0,0 +1,38 @@ + +-- 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 + +library ieee; use ieee.std_logic_1164.all; + +entity dff is + port ( signal d, clk : in std_ulogic; q : out std_ulogic ); +end entity dff; + +---------------------------------------------------------------- + +architecture behav of dff is +begin + + storage : process ( clk ) is + begin + if clk'event and (clk = '1' or clk = 'H') then + q <= d after 5 ns; + end if; + end process storage; + +end architecture behav; |