261 lines
14 KiB
VHDL
261 lines
14 KiB
VHDL
-- (C) Copyright Collin J. Doering 2015
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--
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-- This program is free software: you can redistribute it and/or modify
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-- it under the terms of the GNU General Public License as published by
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-- the Free Software Foundation, either version 3 of the License, or
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-- (at your option) any later version.
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--
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-- This program is distributed in the hope that it will be useful,
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-- but WITHOUT ANY WARRANTY; without even the implied warranty of
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-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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-- GNU General Public License for more details.
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--
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-- You should have received a copy of the GNU General Public License
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-- along with this program. If not, see <http://www.gnu.org/licenses/>.
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-- File: ram8_tb.vhdl
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-- Author: Collin J. Doering <collin.doering@rekahsoft.ca>
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-- Date: May 22, 2015
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library IEEE;
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use IEEE.std_logic_1164.all;
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-- A testbench has no ports.
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entity ram8_tb is
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end ram8_tb;
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architecture ram8_tb_arch of ram8_tb is
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-- Declaration of the component that will be instantiated.
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component ram8
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port (d : in std_logic_vector(15 downto 0);
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load : in std_logic;
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address : in std_logic_vector(2 downto 0);
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clk : in std_logic;
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cout : out std_logic_vector(15 downto 0));
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end component;
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-- Declaration of the clock
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component Clock
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port (finish : in std_logic;
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cout : out std_logic);
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end component;
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-- Specifies which entity is bound with the component.
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for ram8_0: ram8 use entity work.ram8;
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-- Signals
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signal d, cout : std_logic_vector(15 downto 0);
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signal address : std_logic_vector(2 downto 0);
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signal load, finish, clk : std_logic;
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begin
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-- Component instantiation.
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OSC_CLK: Clock port map (finish, clk);
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ram8_0: ram8 port map (d, load, address, clk, cout);
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-- This process does the real job.
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process
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type pattern_type is record
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-- The inputs of the ram8.
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d : std_logic_vector(15 downto 0);
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load : std_logic;
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address : std_logic_vector(2 downto 0);
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-- The output of the ram8.
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cout : std_logic_vector(15 downto 0);
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end record;
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-- The patterns to apply.
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type pattern_array is array (natural range <>) of pattern_type;
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constant patterns : pattern_array :=
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(("0000000000000000", '0', "000", "0000000000000000"),
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("0000000000000000", '0', "000", "0000000000000000"),
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("0000000000000000", '1', "000", "0000000000000000"),
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("0000000000000000", '1', "000", "0000000000000000"),
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("0010101101100111", '0', "000", "0000000000000000"),
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("0010101101100111", '0', "000", "0000000000000000"),
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("0010101101100111", '1', "001", "0000000000000000"),
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("0010101101100111", '1', "001", "0010101101100111"),
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("0010101101100111", '0', "000", "0000000000000000"),
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("0010101101100111", '0', "000", "0000000000000000"),
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("0000110100000101", '0', "011", "0000000000000000"),
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("0000110100000101", '0', "011", "0000000000000000"),
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("0000110100000101", '1', "011", "0000000000000000"),
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("0000110100000101", '1', "011", "0000110100000101"),
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("0000110100000101", '0', "011", "0000110100000101"),
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("0000110100000101", '0', "011", "0000110100000101"),
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("0000110100000101", '0', "001", "0010101101100111"),
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("0001111001100001", '0', "001", "0010101101100111"),
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("0001111001100001", '0', "001", "0010101101100111"),
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("0001111001100001", '1', "111", "0000000000000000"),
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("0001111001100001", '1', "111", "0001111001100001"),
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("0001111001100001", '0', "111", "0001111001100001"),
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("0001111001100001", '0', "111", "0001111001100001"),
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("0001111001100001", '0', "011", "0000110100000101"),
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("0001111001100001", '0', "111", "0001111001100001"),
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("0001111001100001", '0', "000", "0000000000000000"),
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("0001111001100001", '0', "000", "0000000000000000"),
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("0001111001100001", '0', "001", "0010101101100111"),
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("0001111001100001", '0', "010", "0000000000000000"),
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("0001111001100001", '0', "011", "0000110100000101"),
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("0001111001100001", '0', "100", "0000000000000000"),
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("0001111001100001", '0', "101", "0000000000000000"),
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("0001111001100001", '0', "110", "0000000000000000"),
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("0001111001100001", '0', "111", "0001111001100001"),
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("0101010101010101", '1', "000", "0000000000000000"),
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("0101010101010101", '1', "000", "0101010101010101"),
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("0101010101010101", '1', "001", "0010101101100111"),
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("0101010101010101", '1', "001", "0101010101010101"),
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("0101010101010101", '1', "010", "0000000000000000"),
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("0101010101010101", '1', "010", "0101010101010101"),
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("0101010101010101", '1', "011", "0000110100000101"),
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("0101010101010101", '1', "011", "0101010101010101"),
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("0101010101010101", '1', "100", "0000000000000000"),
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("0101010101010101", '1', "100", "0101010101010101"),
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("0101010101010101", '1', "101", "0000000000000000"),
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("0101010101010101", '1', "101", "0101010101010101"),
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("0101010101010101", '1', "110", "0000000000000000"),
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("0101010101010101", '1', "110", "0101010101010101"),
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("0101010101010101", '1', "111", "0001111001100001"),
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("0101010101010101", '1', "111", "0101010101010101"),
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("0101010101010101", '0', "000", "0101010101010101"),
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("0101010101010101", '0', "000", "0101010101010101"),
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("0101010101010101", '0', "001", "0101010101010101"),
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("0101010101010101", '0', "010", "0101010101010101"),
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("0101010101010101", '0', "011", "0101010101010101"),
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("0101010101010101", '0', "100", "0101010101010101"),
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("0101010101010101", '0', "101", "0101010101010101"),
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("0101010101010101", '0', "110", "0101010101010101"),
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("0101010101010101", '0', "111", "0101010101010101"),
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("0101010101010110", '1', "000", "0101010101010101"),
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("0101010101010110", '1', "000", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010110"),
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("0101010101010110", '0', "001", "0101010101010101"),
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("0101010101010110", '0', "010", "0101010101010101"),
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("0101010101010110", '0', "011", "0101010101010101"),
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("0101010101010110", '0', "100", "0101010101010101"),
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("0101010101010110", '0', "101", "0101010101010101"),
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("0101010101010110", '0', "110", "0101010101010101"),
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("0101010101010110", '0', "111", "0101010101010101"),
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("0101010101010101", '1', "000", "0101010101010110"),
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("0101010101010101", '1', "000", "0101010101010101"),
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("0101010101010110", '1', "001", "0101010101010101"),
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("0101010101010110", '1', "001", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "001", "0101010101010110"),
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("0101010101010110", '0', "010", "0101010101010101"),
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("0101010101010110", '0', "011", "0101010101010101"),
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("0101010101010110", '0', "100", "0101010101010101"),
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("0101010101010110", '0', "101", "0101010101010101"),
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("0101010101010110", '0', "110", "0101010101010101"),
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("0101010101010110", '0', "111", "0101010101010101"),
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("0101010101010101", '1', "001", "0101010101010110"),
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("0101010101010101", '1', "001", "0101010101010101"),
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("0101010101010110", '1', "010", "0101010101010101"),
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("0101010101010110", '1', "010", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "001", "0101010101010101"),
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("0101010101010110", '0', "010", "0101010101010110"),
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("0101010101010110", '0', "011", "0101010101010101"),
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("0101010101010110", '0', "100", "0101010101010101"),
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("0101010101010110", '0', "101", "0101010101010101"),
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("0101010101010110", '0', "110", "0101010101010101"),
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("0101010101010110", '0', "111", "0101010101010101"),
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("0101010101010101", '1', "010", "0101010101010110"),
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("0101010101010101", '1', "010", "0101010101010101"),
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("0101010101010110", '1', "011", "0101010101010101"),
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("0101010101010110", '1', "011", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "001", "0101010101010101"),
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("0101010101010110", '0', "010", "0101010101010101"),
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("0101010101010110", '0', "011", "0101010101010110"),
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("0101010101010110", '0', "100", "0101010101010101"),
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("0101010101010110", '0', "101", "0101010101010101"),
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("0101010101010110", '0', "110", "0101010101010101"),
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("0101010101010110", '0', "111", "0101010101010101"),
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("0101010101010101", '1', "011", "0101010101010110"),
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("0101010101010101", '1', "011", "0101010101010101"),
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("0101010101010110", '1', "100", "0101010101010101"),
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("0101010101010110", '1', "100", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "001", "0101010101010101"),
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("0101010101010110", '0', "010", "0101010101010101"),
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("0101010101010110", '0', "011", "0101010101010101"),
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("0101010101010110", '0', "100", "0101010101010110"),
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("0101010101010110", '0', "101", "0101010101010101"),
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("0101010101010110", '0', "110", "0101010101010101"),
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("0101010101010110", '0', "111", "0101010101010101"),
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("0101010101010101", '1', "100", "0101010101010110"),
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("0101010101010101", '1', "100", "0101010101010101"),
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("0101010101010110", '1', "101", "0101010101010101"),
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("0101010101010110", '1', "101", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "001", "0101010101010101"),
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("0101010101010110", '0', "010", "0101010101010101"),
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("0101010101010110", '0', "011", "0101010101010101"),
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("0101010101010110", '0', "100", "0101010101010101"),
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("0101010101010110", '0', "101", "0101010101010110"),
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("0101010101010110", '0', "110", "0101010101010101"),
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("0101010101010110", '0', "111", "0101010101010101"),
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("0101010101010101", '1', "101", "0101010101010110"),
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("0101010101010101", '1', "101", "0101010101010101"),
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("0101010101010110", '1', "110", "0101010101010101"),
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("0101010101010110", '1', "110", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "001", "0101010101010101"),
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("0101010101010110", '0', "010", "0101010101010101"),
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("0101010101010110", '0', "011", "0101010101010101"),
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("0101010101010110", '0', "100", "0101010101010101"),
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("0101010101010110", '0', "101", "0101010101010101"),
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("0101010101010110", '0', "110", "0101010101010110"),
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("0101010101010110", '0', "111", "0101010101010101"),
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("0101010101010101", '1', "110", "0101010101010110"),
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("0101010101010101", '1', "110", "0101010101010101"),
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("0101010101010110", '1', "111", "0101010101010101"),
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("0101010101010110", '1', "111", "0101010101010110"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "000", "0101010101010101"),
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("0101010101010110", '0', "001", "0101010101010101"),
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("0101010101010110", '0', "010", "0101010101010101"),
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("0101010101010110", '0', "011", "0101010101010101"),
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("0101010101010110", '0', "100", "0101010101010101"),
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("0101010101010110", '0', "101", "0101010101010101"),
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("0101010101010110", '0', "110", "0101010101010101"),
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("0101010101010110", '0', "111", "0101010101010110"),
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("0101010101010101", '1', "111", "0101010101010110"),
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("0101010101010101", '1', "111", "0101010101010101"),
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("0101010101010101", '0', "000", "0101010101010101"),
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("0101010101010101", '0', "000", "0101010101010101"),
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("0101010101010101", '0', "001", "0101010101010101"),
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("0101010101010101", '0', "010", "0101010101010101"),
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("0101010101010101", '0', "011", "0101010101010101"),
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("0101010101010101", '0', "100", "0101010101010101"),
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("0101010101010101", '0', "101", "0101010101010101"),
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("0101010101010101", '0', "110", "0101010101010101"),
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("0101010101010101", '0', "111", "0101010101010101"));
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begin
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-- Check each pattern.
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for i in patterns'range loop
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-- Set the inputs.
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d <= patterns(i).d;
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load <= patterns(i).load;
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address <= patterns(i).address;
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wait for 0.25 ns;
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-- Check the outputs.
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assert cout = patterns(i).cout
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report "bad data, memory problem" severity error;
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wait for 0.75 ns;
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end loop;
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-- End the clock
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finish <= '1';
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assert false report "end of test" severity note;
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-- Wait forever; this will finish the simulation.
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wait;
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end process;
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end ram8_tb_arch;
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