1 files changed, 80 insertions, 0 deletions
diff --git a/testsuite/vests/vhdl-ams/ashenden/compliant/subprograms/control_sequencer.vhd b/testsuite/vests/vhdl-ams/ashenden/compliant/subprograms/control_sequencer.vhd
new file mode 100644
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+++ b/testsuite/vests/vhdl-ams/ashenden/compliant/subprograms/control_sequencer.vhd
@@ -0,0 +1,80 @@
+
+-- 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 control_sequencer is
+end entity control_sequencer;
+
+
+
+architecture test of control_sequencer is
+
+  signal phase1, phase2, reg_file_write_en,
+         A_reg_out_en, B_reg_out_en, C_reg_load_en : bit := '0';
+
+begin
+
+  -- code from book
+
+  control_sequencer : process is
+
+    procedure control_write_back is
+    begin
+      wait until phase1 = '1';
+      reg_file_write_en <= '1';
+      wait until phase2 = '0';
+      reg_file_write_en <= '0';
+    end procedure control_write_back;
+
+    procedure control_arith_op is
+    begin
+      wait until phase1 = '1';
+      A_reg_out_en <= '1';
+      B_reg_out_en <= '1';
+      wait until phase1 = '0';
+      A_reg_out_en <= '0';
+      B_reg_out_en <= '0';
+      wait until phase2 = '1';
+      C_reg_load_en <= '1';
+      wait until phase2 = '0';
+      C_reg_load_en <= '0';
+      control_write_back;        -- call procedure
+    end procedure control_arith_op;
+
+    -- . . .
+
+  begin
+    -- . . .
+    control_arith_op;          -- call procedure
+    -- . . .
+    -- not in book
+    wait;
+    -- end not in book
+  end process control_sequencer;
+
+  -- end code from book
+
+
+  clock_gen : process is
+  begin
+    phase1 <= '1' after 10 ns, '0' after 20 ns;
+    phase2 <= '1' after 30 ns, '0' after 40 ns;
+    wait for 40 ns;
+  end process clock_gen;
+
+end architecture test;