Subversion Repositories eco32

//

// eco32.v -- ECO32 top-level description

//

module eco32(clk_in,

             reset_inout_n,

             sdram_clk,

             sdram_fb,

             sdram_cke,

             sdram_cs_n,

             sdram_udqm,

             sdram_ldqm,

             sdram_ras_n,

             sdram_cas_n,

             sdram_we_n,

             sdram_ba,

             sdram_a,

             sdram_dq,

             flash_ce_n,

             flash_oe_n,

             flash_we_n,

             flash_rst_n,

             flash_byte_n,

             flash_a,

             flash_d,

             vga_hsync,

             vga_vsync,

             vga_r,

             vga_g,

             vga_b,

             ps2_clk,

             ps2_data,

             rs232_0_rxd,

             rs232_0_txd,

             rs232_1_rxd,

             rs232_1_txd,

             pbus_d,

             pbus_a,

             pbus_read_n,

             pbus_write_n,

             ata_cs0_n,

             ata_cs1_n,

             ata_intrq,

             ata_dmarq,

             ata_dmack_n,

             ata_iordy,

             slot1_cs_n,

             slot2_cs_n,

             ether_cs_n);

    // clock and reset

    input clk_in;

    inout reset_inout_n;

    // SDRAM

    output sdram_clk;

    input sdram_fb;

    output sdram_cke;

    output sdram_cs_n;

    output sdram_udqm;

    output sdram_ldqm;

    output sdram_ras_n;

    output sdram_cas_n;

    output sdram_we_n;

    output [1:0] sdram_ba;

    output [12:0] sdram_a;

    inout [15:0] sdram_dq;

    // flash ROM

    output flash_ce_n;

    output flash_oe_n;

    output flash_we_n;

    output flash_rst_n;

    output flash_byte_n;

    output [19:0] flash_a;

    input [15:0] flash_d;

    // VGA display

    output vga_hsync;

    output vga_vsync;

    output [2:0] vga_r;

    output [2:0] vga_g;

    output [2:0] vga_b;

    // keyboard

    input ps2_clk;

    input ps2_data;

    // serial line 0

    input rs232_0_rxd;

    output rs232_0_txd;

    // serial line 1

    input rs232_1_rxd;

    output rs232_1_txd;

    // peripheral bus

    inout [15:0] pbus_d;

    output [4:0] pbus_a;

    output pbus_read_n;

    output pbus_write_n;

    // ATA adapter

    output ata_cs0_n;

    output ata_cs1_n;

    input ata_intrq;

    input ata_dmarq;

    output ata_dmack_n;

    input ata_iordy;

    // expansion slot 1

    output slot1_cs_n;

    // expansion slot 2

    output slot2_cs_n;

    // ethernet

    output ether_cs_n;

  // clk_reset

  wire clk;

  wire clk_ok;

  wire reset;

  // cpu

  wire cpu_en;

  wire cpu_wr;

  wire [1:0] cpu_size;

  wire [31:0] cpu_addr;

  wire [31:0] cpu_data_in;

  wire [31:0] cpu_data_out;

  wire cpu_wt;

  wire [15:0] cpu_irq;

  // ram

  wire ram_en;

  wire ram_wr;

  wire [1:0] ram_size;

  wire [24:0] ram_addr;

  wire [31:0] ram_data_in;

  wire [31:0] ram_data_out;

  wire ram_wt;

  // rom

  wire rom_en;

  wire rom_wr;

  wire [1:0] rom_size;

  wire [20:0] rom_addr;

  wire [31:0] rom_data_out;

  wire rom_wt;

  // tmr

  wire tmr_en;

  wire tmr_wr;

  wire [3:2] tmr_addr;

  wire [31:0] tmr_data_in;

  wire [31:0] tmr_data_out;

  wire tmr_wt;

  wire tmr_irq;

  // dsp

  wire dsp_en;

  wire dsp_wr;

  wire [13:2] dsp_addr;

  wire [15:0] dsp_data_in;

  wire [15:0] dsp_data_out;

  wire dsp_wt;

  // kbd

  wire kbd_en;

  wire kbd_wr;

  wire kbd_addr;

  wire [7:0] kbd_data_in;

  wire [7:0] kbd_data_out;

  wire kbd_wt;

  wire kbd_irq;

  // ser0

  wire ser0_en;

  wire ser0_wr;

  wire [3:2] ser0_addr;

  wire [7:0] ser0_data_in;

  wire [7:0] ser0_data_out;

  wire ser0_wt;

  wire ser0_irq_r;

  wire ser0_irq_t;

  // ser1

  wire ser1_en;

  wire ser1_wr;

  wire [3:2] ser1_addr;

  wire [7:0] ser1_data_in;

  wire [7:0] ser1_data_out;

  wire ser1_wt;

  wire ser1_irq_r;

  wire ser1_irq_t;

  // dsk

  wire dsk_en;

  wire dsk_wr;

  wire [19:2] dsk_addr;

  wire [31:0] dsk_data_in;

  wire [31:0] dsk_data_out;

  wire dsk_wt;

  wire dsk_irq;

  clk_reset clk_reset1(

    .clk_in(clk_in),

    .reset_inout_n(reset_inout_n),

    .sdram_clk(sdram_clk),

    .sdram_fb(sdram_fb),

    .clk(clk),

    .clk_ok(clk_ok),

    .reset(reset)

  );

  busctrl busctrl1(

    // cpu

    .cpu_en(cpu_en),

    .cpu_wr(cpu_wr),

    .cpu_size(cpu_size[1:0]),

    .cpu_addr(cpu_addr[31:0]),

    .cpu_data_in(cpu_data_in[31:0]),

    .cpu_data_out(cpu_data_out[31:0]),

    .cpu_wt(cpu_wt),

    // ram

    .ram_en(ram_en),

    .ram_wr(ram_wr),

    .ram_size(ram_size[1:0]),

    .ram_addr(ram_addr[24:0]),

    .ram_data_in(ram_data_in[31:0]),

    .ram_data_out(ram_data_out[31:0]),

    .ram_wt(ram_wt),

    // rom

    .rom_en(rom_en),

    .rom_wr(rom_wr),

    .rom_size(rom_size[1:0]),

    .rom_addr(rom_addr[20:0]),

    .rom_data_out(rom_data_out[31:0]),

    .rom_wt(rom_wt),

    // tmr

    .tmr_en(tmr_en),

    .tmr_wr(tmr_wr),

    .tmr_addr(tmr_addr[3:2]),

    .tmr_data_in(tmr_data_in[31:0]),

    .tmr_data_out(tmr_data_out[31:0]),

    .tmr_wt(tmr_wt),

    // dsp

    .dsp_en(dsp_en),

    .dsp_wr(dsp_wr),

    .dsp_addr(dsp_addr[13:2]),

    .dsp_data_in(dsp_data_in[15:0]),

    .dsp_data_out(dsp_data_out[15:0]),

    .dsp_wt(dsp_wt),

    // kbd

    .kbd_en(kbd_en),

    .kbd_wr(kbd_wr),

    .kbd_addr(kbd_addr),

    .kbd_data_in(kbd_data_in[7:0]),

    .kbd_data_out(kbd_data_out[7:0]),

    .kbd_wt(kbd_wt),

    // ser0

    .ser0_en(ser0_en),

    .ser0_wr(ser0_wr),

    .ser0_addr(ser0_addr[3:2]),

    .ser0_data_in(ser0_data_in[7:0]),

    .ser0_data_out(ser0_data_out[7:0]),

    .ser0_wt(ser0_wt),

    // ser1

    .ser1_en(ser1_en),

    .ser1_wr(ser1_wr),

    .ser1_addr(ser1_addr[3:2]),

    .ser1_data_in(ser1_data_in[7:0]),

    .ser1_data_out(ser1_data_out[7:0]),

    .ser1_wt(ser1_wt),

    // dsk

    .dsk_en(dsk_en),

    .dsk_wr(dsk_wr),

    .dsk_addr(dsk_addr[19:2]),

    .dsk_data_in(dsk_data_in[31:0]),

    .dsk_data_out(dsk_data_out[31:0]),

    .dsk_wt(dsk_wt)

  );

  cpu cpu1(

    .clk(clk),

    .reset(reset),

    .bus_en(cpu_en),

    .bus_wr(cpu_wr),

    .bus_size(cpu_size[1:0]),

    .bus_addr(cpu_addr[31:0]),

    .bus_data_in(cpu_data_in[31:0]),

    .bus_data_out(cpu_data_out[31:0]),

    .bus_wt(cpu_wt),

    .irq(cpu_irq[15:0])

  );

  assign cpu_irq[15] = 1'b0;

  assign cpu_irq[14] = tmr_irq;

  assign cpu_irq[13] = 1'b0;

  assign cpu_irq[12] = 1'b0;

  assign cpu_irq[11] = 1'b0;

  assign cpu_irq[10] = 1'b0;

  assign cpu_irq[ 9] = 1'b0;

  assign cpu_irq[ 8] = dsk_irq;

  assign cpu_irq[ 7] = 1'b0;

  assign cpu_irq[ 6] = 1'b0;

  assign cpu_irq[ 5] = 1'b0;

  assign cpu_irq[ 4] = kbd_irq;

  assign cpu_irq[ 3] = ser1_irq_r;

  assign cpu_irq[ 2] = ser1_irq_t;

  assign cpu_irq[ 1] = ser0_irq_r;

  assign cpu_irq[ 0] = ser0_irq_t;

  ram ram1(

    .clk(clk),

    .clk_ok(clk_ok),

    .reset(reset),

    .en(ram_en),

    .wr(ram_wr),

    .size(ram_size[1:0]),

    .addr(ram_addr[24:0]),

    .data_in(ram_data_in[31:0]),

    .data_out(ram_data_out[31:0]),

    .wt(ram_wt),

    .sdram_cke(sdram_cke),

    .sdram_cs_n(sdram_cs_n),

    .sdram_udqm(sdram_udqm),

    .sdram_ldqm(sdram_ldqm),

    .sdram_ras_n(sdram_ras_n),

    .sdram_cas_n(sdram_cas_n),

    .sdram_we_n(sdram_we_n),

    .sdram_ba(sdram_ba[1:0]),

    .sdram_a(sdram_a[12:0]),

    .sdram_dq(sdram_dq[15:0])

  );

  rom rom1(

    .clk(clk),

    .reset(reset),

    .en(rom_en),

    .wr(rom_wr),

    .size(rom_size[1:0]),

    .addr(rom_addr[20:0]),

    .data_out(rom_data_out[31:0]),

    .wt(rom_wt),

    .ce_n(flash_ce_n),

    .oe_n(flash_oe_n),

    .we_n(flash_we_n),

    .rst_n(flash_rst_n),

    .byte_n(flash_byte_n),

    .a(flash_a[19:0]),

    .d(flash_d[15:0])

  );

  tmr tmr1(

    .clk(clk),

    .reset(reset),

    .en(tmr_en),

    .wr(tmr_wr),

    .addr(tmr_addr[3:2]),

    .data_in(tmr_data_in[31:0]),

    .data_out(tmr_data_out[31:0]),

    .wt(tmr_wt),

    .irq(tmr_irq)

  );

  dsp dsp1(

    .clk(clk),

    .reset(reset),

    .en(dsp_en),

    .wr(dsp_wr),

    .addr(dsp_addr[13:2]),

    .data_in(dsp_data_in[15:0]),

    .data_out(dsp_data_out[15:0]),

    .wt(dsp_wt),

    .hsync(vga_hsync),

    .vsync(vga_vsync),

    .r(vga_r[2:0]),

    .g(vga_g[2:0]),

    .b(vga_b[2:0])

  );

  kbd kbd1(

    .ps2_clk(ps2_clk),

    .ps2_data(ps2_data),

    .clk(clk),

    .reset(reset),

    .en(kbd_en),

    .wr(kbd_wr),

    .addr(kbd_addr),

    .data_in(kbd_data_in[7:0]),

    .data_out(kbd_data_out[7:0]),

    .wt(kbd_wt),

    .irq(kbd_irq)

  );

  ser ser1_0(

    .clk(clk),

    .reset(reset),

    .en(ser0_en),

    .wr(ser0_wr),

    .addr(ser0_addr[3:2]),

    .data_in(ser0_data_in[7:0]),

    .data_out(ser0_data_out[7:0]),

    .wt(ser0_wt),

    .irq_r(ser0_irq_r),

    .irq_t(ser0_irq_t),

    .rxd(rs232_0_rxd),

    .txd(rs232_0_txd)

  );

  ser ser1_1(

    .clk(clk),

    .reset(reset),

    .en(ser1_en),

    .wr(ser1_wr),

    .addr(ser1_addr[3:2]),

    .data_in(ser1_data_in[7:0]),

    .data_out(ser1_data_out[7:0]),

    .wt(ser1_wt),

    .irq_r(ser1_irq_r),

    .irq_t(ser1_irq_t),

    .rxd(rs232_1_rxd),

    .txd(rs232_1_txd)

  );

  dsk dsk1(

    .clk(clk),

    .reset(reset),

    .en(dsk_en),

    .wr(dsk_wr),

    .addr(dsk_addr[19:2]),

    .data_in(dsk_data_in[31:0]),

    .data_out(dsk_data_out[31:0]),

    .wt(dsk_wt),

    .irq(dsk_irq),

    .ata_d(pbus_d[15:0]),

    .ata_a(pbus_a[2:0]),

    .ata_cs0_n(ata_cs0_n),

    .ata_cs1_n(ata_cs1_n),

    .ata_dior_n(pbus_read_n),

    .ata_diow_n(pbus_write_n),

    .ata_intrq(ata_intrq),

    .ata_dmarq(ata_dmarq),

    .ata_dmack_n(ata_dmack_n),

    .ata_iordy(ata_iordy)

  );

  assign pbus_a[4:3] = 2'b00;

  assign slot1_cs_n = 1;

  assign slot2_cs_n = 1;

  assign ether_cs_n = 1;

endmodule