diff options
Diffstat (limited to 'testsuite/vests/vhdl-93/ashenden/compliant/ch_20_ch_20_11.vhd')
-rw-r--r-- | testsuite/vests/vhdl-93/ashenden/compliant/ch_20_ch_20_11.vhd | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-93/ashenden/compliant/ch_20_ch_20_11.vhd b/testsuite/vests/vhdl-93/ashenden/compliant/ch_20_ch_20_11.vhd new file mode 100644 index 000000000..202ab84f1 --- /dev/null +++ b/testsuite/vests/vhdl-93/ashenden/compliant/ch_20_ch_20_11.vhd @@ -0,0 +1,74 @@ + +-- Copyright (C) 1996 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 + +-- --------------------------------------------------------------------- +-- +-- $Id: ch_20_ch_20_11.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $ +-- $Revision: 1.1.1.1 $ +-- +-- --------------------------------------------------------------------- + +entity ch_20_11 is + +end entity ch_20_11; + + +---------------------------------------------------------------- + + +architecture test of ch_20_11 is + + component comp is + end component comp; + + signal clk_phase1, clk_phase2 : bit; + + -- code from book: + + group signal_pair is (signal, signal); + + group clock_pair : signal_pair ( clk_phase1, clk_phase2 ); + + attribute max_skew : time; + + attribute max_skew of clock_pair : group is 200 ps; + + group component_instances is ( label <> ); + + group U1 : component_instances ( nand1, nand2, nand3 ); + group U2 : component_instances ( inv1, inv2 ); + + attribute IC_allocation : string; + + attribute IC_allocation of U1 : group is "74LS00"; + attribute IC_allocation of U2 : group is "74LS04"; + + -- end of code from book + +begin + + + nand1 : component comp; + nand2 : component comp; + nand3 : component comp; + inv1 : component comp; + inv2 : component comp; + + +end architecture test; |