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-- 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_05_fg_05_28.vhd,v 1.1.1.1 2001-08-22 18:20:48 paw Exp $
-- $Revision: 1.1.1.1 $
--
-- ---------------------------------------------------------------------
entity reg is
port ( d : in bit_vector(7 downto 0);
q : out bit_vector(7 downto 0);
clk : in bit );
end entity reg;
--------------------------------------------------
-- not in book
entity microprocessor is
end entity microprocessor;
-- end not in book
architecture RTL of microprocessor is
signal interrupt_req : bit;
signal interrupt_level : bit_vector(2 downto 0);
signal carry_flag, negative_flag, overflow_flag, zero_flag : bit;
signal program_status : bit_vector(7 downto 0);
signal clk_PSR : bit;
-- . . .
begin
PSR : entity work.reg
port map ( d(7) => interrupt_req,
d(6 downto 4) => interrupt_level,
d(3) => carry_flag, d(2) => negative_flag,
d(1) => overflow_flag, d(0) => zero_flag,
q => program_status,
clk => clk_PSR );
-- . . .
end architecture RTL;
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