Subversion Repositories ao486

/*

 * Copyright (c) 2014, Aleksander Osman

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions are met:

 *

 * * Redistributions of source code must retain the above copyright notice, this

 *   list of conditions and the following disclaimer.

 *

 * * Redistributions in binary form must reproduce the above copyright notice,

 *   this list of conditions and the following disclaimer in the documentation

 *   and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

module soc(

    input               CLOCK_50,

    //SDRAM

    output      [12:0]  DRAM_ADDR,

    output      [1:0]   DRAM_BA,

    output              DRAM_CAS_N,

    output              DRAM_CKE,

    output              DRAM_CLK,

    output              DRAM_CS_N,

    inout       [31:0]  DRAM_DQ,

    output      [3:0]   DRAM_DQM,

    output              DRAM_RAS_N,

    output              DRAM_WE_N,

    //PS2 KEYBOARD

    inout               PS2_CLK,

    inout               PS2_DAT,

    //PS2 MOUSE

    inout               PS2_CLK2,

    inout               PS2_DAT2,

    //KEYS

    input       [3:0]   KEY,

    //SD

    output              SD_CLK,

    inout               SD_CMD,

    inout       [3:0]   SD_DAT,

    input               SD_WP_N,

    //VGA

    output              VGA_CLK,

    output              VGA_SYNC_N,

    output              VGA_BLANK_N,

    output              VGA_HS,

    output              VGA_VS,

    output      [7:0]   VGA_R,

    output      [7:0]   VGA_G,

    output      [7:0]   VGA_B,

    //SOUND

    output              I2C_SCLK,

    inout               I2C_SDAT,

    output              AUD_XCK,

    output              AUD_BCLK,

    output              AUD_DACDAT,

    output              AUD_DACLRCK

);

//------------------------------------------------------------------------------

assign DRAM_CLK = clk_sys;

//------------------------------------------------------------------------------

wire clk_sys;

wire clk_vga;

wire clk_sound;

wire rst_n;

pll pll_inst(

    .inclk0     (CLOCK_50),

    .c0         (clk_sys),

    .c1         (clk_vga),

    .c2         (clk_sound),

    .locked     (rst_n)

);

//------------------------------------------------------------------------------

wire [7:0] pio_output;

wire ps2_a20_enable;

wire ps2_reset_n;

//------------------------------------------------------------------------------

system u0(

    .clk_sys_clk                       (clk_sys),

    .reset_sys_reset_n                 (rst_n),

    .clk_vga_clk                       (clk_vga),

    .reset_vga_reset_n                 (rst_n),

    .clk_sound_clk                     (clk_sound),

    .reset_sound_reset_n               (rst_n),

    .export_vga_clock                  (VGA_CLK),

    .export_vga_sync_n                 (VGA_SYNC_N),

    .export_vga_blank_n                (VGA_BLANK_N),

    .export_vga_horiz_sync             (VGA_HS),

    .export_vga_vert_sync              (VGA_VS),

    .export_vga_r                      (VGA_R),

    .export_vga_g                      (VGA_G),

    .export_vga_b                      (VGA_B),

    .sdram_conduit_end_addr            (DRAM_ADDR),

    .sdram_conduit_end_ba              (DRAM_BA),

    .sdram_conduit_end_cas_n           (DRAM_CAS_N),

    .sdram_conduit_end_cke             (DRAM_CKE),

    .sdram_conduit_end_cs_n            (DRAM_CS_N),

    .sdram_conduit_end_dq              (DRAM_DQ),

    .sdram_conduit_end_dqm             (DRAM_DQM),

    .sdram_conduit_end_ras_n           (DRAM_RAS_N),

    .sdram_conduit_end_we_n            (DRAM_WE_N),

    .export_sound_sclk                 (I2C_SCLK),

    .export_sound_sdat                 (I2C_SDAT),

    .export_sound_xclk                 (AUD_XCK),

    .export_sound_bclk                 (AUD_BCLK),

    .export_sound_dat                  (AUD_DACDAT),

    .export_sound_lr                   (AUD_DACLRCK),

    .export_sd_clk                     (SD_CLK),

    .export_sd_dat                     (SD_DAT),

    .export_sd_cmd                     (SD_CMD),

    .export_ps2_out_port_a20_enable    (ps2_a20_enable),

    .export_ps2_out_port_reset_n       (ps2_reset_n),

    .export_ps2_kbclk                  (PS2_CLK),

    .export_ps2_kbdat                  (PS2_DAT),

    .export_ps2_mouseclk               (PS2_CLK2),

    .export_ps2_mousedat               (PS2_DAT2),

    .pio_input_export                  ({ 2'd0, ps2_reset_n, ps2_a20_enable, KEY }),

    .reset_only_ao486_reset            (pio_output[0] || ~(ps2_reset_n)),

    .pio_output_export                 (pio_output)

);

endmodule