------------------------------------------------------------------------------- -- -- -- X X XXXXXX XXXXXX XXXXXX XXXXXX X -- -- XX XX X X X X X X X XX -- -- X X X X X X X X X X X X -- -- X X X X X X X X X X X X -- -- X X X X XXXXXX X X XXXXXX X -- -- X X X X X X X X X -- -- X X X X X X X X X -- -- X X X X X X X X X X -- -- X X XXXXXX XXXXXX XXXXXX XXXXXX X -- -- -- -- -- -- O R E G A N O S Y S T E M S -- -- -- -- Design & Consulting -- -- -- ------------------------------------------------------------------------------- -- -- -- Web: http://www.oregano.at/ -- -- -- -- Contact: mc8051@oregano.at -- -- -- ------------------------------------------------------------------------------- -- -- -- MC8051 - VHDL 8051 Microcontroller IP Core -- -- Copyright (C) 2001 OREGANO SYSTEMS -- -- -- -- This library is free software; you can redistribute it and/or -- -- modify it under the terms of the GNU Lesser General Public -- -- License as published by the Free Software Foundation; either -- -- version 2.1 of the License, or (at your option) any later version. -- -- -- -- This library 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 -- -- Lesser General Public License for more details. -- -- -- -- Full details of the license can be found in the file LGPL.TXT. -- -- -- -- You should have received a copy of the GNU Lesser General Public -- -- License along with this library; if not, write to the Free Software -- -- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -- -- -- ------------------------------------------------------------------------------- -- -- -- Author: Helmut Mayrhofer -- -- Filename: mc8051_top_struc.vhd -- -- Date of Creation: Mon Aug 9 12:14:48 1999 -- -- Version: $Revision: 1.7 $ -- -- Date of Latest Version: $Date: 2002/01/07 12:17:45 $ -- -- -- Description: Connect the mc8051 core to its instruction and data -- memories. -- -- -- -- ------------------------------------------------------------------------------- architecture struc of mc8051_top is signal s_rom_adr: std_logic_vector(15 downto 0); -- Programmcounter = -- ROM-adress signal s_rom_adr_sml: std_logic_vector(12 downto 0); -- *** new signal s_rom_data: std_logic_vector(7 downto 0); -- data input from ROM signal s_ram_data_out: std_logic_vector(7 downto 0); -- data output to -- internal RAM signal s_ram_data_in: std_logic_vector(7 downto 0); -- data input from -- internal RAM signal s_ram_adr: std_logic_vector(6 downto 0); -- internal RAM-adress signal s_ram_wr: std_logic; -- read (0)/write (1) -- internal RAM signal s_ram_en: std_logic; -- RAM-block enable signal s_ramx_data_out: std_logic_vector(7 downto 0); -- data output to -- ext. RAM signal s_ramx_data_in: std_logic_vector(7 downto 0); -- data input from -- ext. RAM signal s_ramx_adr: std_logic_vector(15 downto 0); -- ext. RAM-adress signal s_ramx_wr: std_logic; -- read (0)/write (1) -- ext. RAM begin -- architecture structural s_rom_adr_sml i_mc8051_core : mc8051_core port map(clk => clk, reset => reset, rom_data_i => s_rom_data, ram_data_i => s_ram_data_out, int0_i => int0_i, int1_i => int1_i, all_t0_i => all_t0_i, all_t1_i => all_t1_i, all_rxd_i => all_rxd_i, p0_i => p0_i, p1_i => p1_i, p2_i => p2_i, p3_i => p3_i, p0_o => p0_o, p1_o => p1_o, p2_o => p2_o, p3_o => p3_o, all_rxd_o => all_rxd_o, all_txd_o => all_txd_o, all_rxdwr_o => all_rxdwr_o, rom_adr_o => s_rom_adr, ram_data_o => s_ram_data_in, ram_adr_o => s_ram_adr, ram_wr_o => s_ram_wr, ram_en_o => s_ram_en, datax_i => s_ramx_data_in, datax_o => s_ramx_data_out, adrx_o => s_ramx_adr, wrx_o => s_ramx_wr); ----------------------------------------------------------------------------- -- Hook up the general purpose 128x8 synchronous on-chip RAM. i_mc8051_ram : mc8051_ram port map (clk => clk, reset => reset, ram_adr_i => s_ram_adr, ram_data_i => s_ram_data_in, ram_wr_i => s_ram_wr, ram_en_i => s_ram_en, ram_data_o => s_ram_data_out); -- THIS RAM IS A MUST HAVE!! ----------------------------------------------------------------------------- ----------------------------------------------------------------------------- -- Hook up the (up to) 64kx8 synchronous on-chip ROM. i_mc8051_rom : mc8051_rom port map (clk => clk, reset => reset, rom_adr_i => s_rom_adr, rom_data_o => s_rom_data); -- THE ROM OF COURSE IS A MUST HAVE, ALTHOUGH THE SIZE CAN BE SMALLER!! ----------------------------------------------------------------------------- ----------------------------------------------------------------------------- -- Hook up the (up to) 64kx8 synchronous RAM. i_mc8051_ramx : mc8051_ramx port map (clk => clk, reset => reset, ram_adr_i => s_ramx_adr, ram_data_i => s_ramx_data_out, ram_wr_i => s_ramx_wr, ram_data_o => s_ramx_data_in); -- THIS RAM (IF USED) CAN BE ON OR OFF CHIP, THE SIZE IS ARBITRARY. ----------------------------------------------------------------------------- end struc;
