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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 find_first_set is
end entity find_first_set;
architecture test of find_first_set is
-- code from book
procedure find_first_set ( v : in bit_vector;
found : out boolean;
first_set_index : out natural ) is
begin
for index in v'range loop
if v(index) = '1' then
found := true;
first_set_index := index;
return;
end if;
end loop;
found := false;
end procedure find_first_set;
-- end code from book
begin
stimulus : process is
-- code from book (in text)
variable int_req : bit_vector (7 downto 0);
variable top_priority : natural;
variable int_pending : boolean;
-- . . .
-- end code from book
constant block_count : natural := 16;
-- code from book (in text)
variable free_block_map : bit_vector(0 to block_count-1);
variable first_free_block : natural;
variable free_block_found : boolean;
-- . . .
-- end code from book
begin
int_req := "00010000";
-- code from book (in text)
find_first_set ( int_req, int_pending, top_priority );
-- end code from book
free_block_map := (others => '0');
-- code from book (in text)
find_first_set ( free_block_map, free_block_found, first_free_block );
-- end code from book
wait;
end process stimulus;
end architecture test;
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