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diff --git a/testsuite/vests/vhdl-ams/ashenden/compliant/files-and-IO/stimulus_interpreter-1.vhd b/testsuite/vests/vhdl-ams/ashenden/compliant/files-and-IO/stimulus_interpreter-1.vhd
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+
+-- 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 stimulus_interpreter is
+end entity stimulus_interpreter;
+
+
+architecture test of stimulus_interpreter is
+
+  quantity temperature : real;
+  signal temp_sig, setting : real;
+  signal enable, heater_fail : bit;
+
+begin
+
+-- code from book
+
+stimulus_interpreter : process is
+
+  use std.textio.all;
+
+  file control : text open read_mode is "control";
+
+  variable command : line;
+  variable read_ok : boolean;
+  variable next_time : time;
+  variable whitespace : character;
+  variable signal_id : string(1 to 4);
+  variable temp_value, set_value : real;
+  variable on_value, fail_value : bit;
+
+begin
+
+  command_loop : while not endfile(control) loop
+
+    readline ( control, command );
+
+    -- read next stimulus time, and suspend until then
+    read ( command, next_time, read_ok );
+    if not read_ok then
+      report "error reading time from line: " & command.all
+        severity warning;
+      next command_loop;
+    end if;
+    wait for next_time - now;
+
+    -- skip whitespace
+    while command'length > 0
+      and ( command(command'left) = ' '    -- ordinary space
+            or command(command'left) = ' '  -- non-breaking space
+            or command(command'left) = HT ) loop
+      read ( command, whitespace );
+    end loop;
+
+    -- read signal identifier string
+    read ( command, signal_id, read_ok );
+    if not read_ok then
+      report "error reading signal id from line: " & command.all
+        severity warning;
+      next command_loop;
+    end if;
+    -- dispatch based on signal id
+    case signal_id is
+
+      when "temp" =>
+        read ( command, temp_value, read_ok );
+        if not read_ok then
+          report "error reading temperature value from line: "
+                 & command.all
+            severity warning;
+          next command_loop;
+        end if;
+        temp_sig <= temp_value;
+
+      when "set " =>
+        -- . . .    -- similar to "temp"
+
+        -- not in book
+        read ( command, set_value, read_ok );
+        if not read_ok then
+          report "error reading setting value from line: "
+                 & command.all
+            severity warning;
+          next command_loop;
+        end if;
+        setting <= set_value;
+        -- end not in book
+
+      when "on  " =>
+        read ( command, on_value, read_ok );
+        if not read_ok then
+          report "error reading on value from line: "
+                 & command.all
+            severity warning;
+          next command_loop;
+        end if;
+        enable <= on_value;
+
+      when "fail" =>
+        -- . . .    -- similar to "on  "
+
+        -- not in book
+        read ( command, fail_value, read_ok );
+        if not read_ok then
+          report "error reading fail value from line: "
+                 & command.all
+            severity warning;
+          next command_loop;
+        end if;
+        heater_fail <= fail_value;
+        -- end not in book
+
+      when others =>
+        report "invalid signal id in line: " & signal_id
+          severity warning;
+        next command_loop;
+
+    end case;
+
+  end loop command_loop;
+
+  wait;
+
+end process stimulus_interpreter;
+
+-- end code from book
+
+-- code from book (in text)
+
+temperature == temp_sig'ramp;
+
+-- end code from book (in text)
+
+end architecture test;