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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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--
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--
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-- The testbench for t48_core.
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-- The testbench for t48_core.
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--
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--
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-- $Id: tb.vhd,v 1.1 2004-03-24 21:42:10 arniml Exp $
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-- $Id: tb.vhd,v 1.2 2004-03-24 23:22:35 arniml Exp $
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--
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--
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-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
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-- Copyright (c) 2004, Arnim Laeuger (arniml@opencores.org)
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--
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--
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-- All rights reserved
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-- All rights reserved
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--
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--
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| Line 59... |
Line 59... |
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-- clock period, 11 MHz
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-- clock period, 11 MHz
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constant period_c : time := 90 ns;
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constant period_c : time := 90 ns;
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signal xtal_s : std_logic;
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signal xtal_s : std_logic;
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signal xtal_n_s : std_logic;
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signal res_n_s : std_logic;
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signal res_n_s : std_logic;
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signal xtal3_s : std_logic;
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signal xtal3_s : std_logic;
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signal int_n_s : std_logic;
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signal int_n_s : std_logic;
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signal ale_s : std_logic;
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signal ale_s : std_logic;
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signal rom_addr_s : std_logic_vector(11 downto 0);
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signal rom_addr_s : std_logic_vector(11 downto 0);
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| Line 248... |
Line 249... |
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if wr_n_s'event and wr_n_s = '1' then
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if wr_n_s'event and wr_n_s = '1' then
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ext_ram_we_s <= '1';
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ext_ram_we_s <= '1';
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end if;
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end if;
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if xtal_s'event then
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if xtal_s'event and xtal_s = '1' then
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ext_ram_we_s <= '0';
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ext_ram_we_s <= '0';
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end if;
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end if;
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end process ext_ram;
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end process ext_ram;
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--
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--
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-----------------------------------------------------------------------------
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-----------------------------------------------------------------------------
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xtal_n_s <= not xtal_s;
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-----------------------------------------------------------------------------
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-----------------------------------------------------------------------------
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-- The clock generator
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-- The clock generator
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--
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--
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clk_gen: process
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clk_gen: process
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begin
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begin
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Line 342... |
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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-- File History:
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-- File History:
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--
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--
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-- $Log: not supported by cvs2svn $
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-- $Log: not supported by cvs2svn $
|
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-- Revision 1.1 2004/03/24 21:42:10 arniml
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-- initial check-in
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--
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-------------------------------------------------------------------------------
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-------------------------------------------------------------------------------
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No newline at end of file
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No newline at end of file
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