mirror of
https://github.com/mist-devel/mist-board.git
synced 2026-01-29 21:01:07 +00:00
45 lines
1.9 KiB
VHDL
45 lines
1.9 KiB
VHDL
--
|
|
-- Example ROM definitions pack for type-independent srecord output
|
|
-- Copyright (C) 2000 Hendrik De Vloed - hendrik.devloed@rug.ac.be
|
|
-- Copyright (C) 2007 Peter Miller
|
|
--
|
|
-- This program 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 3 of the License, or
|
|
-- (at your option) any later version.
|
|
--
|
|
-- This program 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 this program. If not, see
|
|
-- <http://www.gnu.org/licenses/>.
|
|
--
|
|
|
|
library IEEE;
|
|
use IEEE.std_logic_1164.all;
|
|
package testcode_defs_pack is
|
|
-- The basic type of the data word stored in the ROM. Define
|
|
-- your ROM's width here.
|
|
subtype testcode_rom_entry is std_logic_vector(15 downto 0);
|
|
-- The type used to represent the ROM. Define your range
|
|
-- here.
|
|
type testcode_rom_array is array(0 to 511) of testcode_rom_entry;
|
|
-- The "Don't Care" value used to fill unused parts of the ROM.
|
|
constant testcode_dont_care : testcode_rom_entry := (others=>'-');
|
|
-- The conversion function used to make srecord's output
|
|
-- independent of the actual rom_entry type and # of bits.
|
|
function testcode_entry(data:natural) return testcode_rom_entry;
|
|
end package;
|
|
|
|
library IEEE;
|
|
use IEEE.numeric_std.all;
|
|
package body testcode_defs_pack is
|
|
function testcode_entry(data:natural) return testcode_rom_entry is
|
|
begin
|
|
return std_logic_vector(to_unsigned(data,testcode_rom_entry'length));
|
|
end testcode_entry;
|
|
end package body;
|