progrom.vhd

PIC源代码很不错

-- PROGROM.vhd (LPM version)
-- Program ROM of CQPIC (PIC16F84)
-- (1) Version 1.00a		Nov 1 1999
--
-- Copyright(c)1999-2002 Sumio Morioka
-- e-mail:[e-mail], URL:http://www02.so-net.ne.jp/~morioka/cqpic.htm

-- 拲堄丗偙偺僼傽僀儖偼ALTERA梡偱偡丏Xilinx偺応崌偼CoreGenerator偱儊儌儕傪惗惉偟偰巊偭偰偔偩偝偄丏
-- 偦偺偲偒丆儗僕僗僞偼晅偗偰傕晅偗側偔偰傕戝忎晇偱偡乮儗僀僥儞僔偑俁埲壓側傜側傫偱傕傛偄乯丏

library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_arith.all;
library lpm;
use		lpm.lpm_components.all;

entity progrom is
	port (
		romaddr		: in  std_logic_vector(12 downto 0);
		clk			: in  std_logic;
		romout		: out std_logic_vector(13 downto 0)
	);
end progrom;

architecture RTL of progrom is
begin
	u1: lpm_rom
		generic map (
			LPM_WIDTH			=> 14,
			LPM_WIDTHAD			=> 13,				-- decrease bus size if total memory amount is smaller
			LPM_FILE			=> "progrom.mif",
			LPM_ADDRESS_CONTROL	=> "UNREGISTERED",
			LPM_OUTDATA			=> "REGISTERED"
		)
		port map (
			address		=> romaddr,
--			inclock		=> clk,
			outclock	=> clk,
			q			=> romout
		);
end RTL;