ship: Video

== Ports ===========================================================
data  in:    inX
data  in:    inY
data  in:    inData

percolate up:    dvi_d0      1
percolate up:    dvi_d1      1
percolate up:    dvi_d2      1
percolate up:    dvi_d3      1
percolate up:    dvi_d4      1
percolate up:    dvi_d5      1
percolate up:    dvi_d6      1
percolate up:    dvi_d7      1
percolate up:    dvi_d8      1
percolate up:    dvi_d9      1
percolate up:    dvi_d10     1
percolate up:    dvi_d11     1

percolate up:    dvi_h       1
percolate up:    dvi_v       1
percolate up:    dvi_xclk_n  1
percolate up:    dvi_xclk_p  1
percolate up:    dvi_de      1
percolate up:    dvi_reset_b 1
percolate down:  dvi_gpio1   1

percolate up:    dvi_iic_scl 1
percolate inout: dvi_iic_sda 1

percolate up:    gpio_led_c   1
percolate up:    gpio_led_e   1
percolate up:    gpio_led_n   1
percolate up:    gpio_led_s   1
percolate up:    gpio_led_w   1
percolate up:    gpio_led_0   1
percolate up:    gpio_led_1   1
percolate up:    gpio_led_2   1
percolate up:    gpio_led_3   1
percolate up:    gpio_led_4   1
percolate up:    gpio_led_5   1
percolate up:    gpio_led_6   1
percolate up:    gpio_led_7   1

== TeX ==============================================================

== Fleeterpreter ====================================================

  public void service() { }

== FleetSim ==============================================================

== FPGA ==============================================================

  assign dvi_de      = 1;
  assign dvi_reset_b = 1;

  assign dvi_d0      = 1;
  assign dvi_d1      = 0;
  assign dvi_d2      = 1;
  assign dvi_d3      = 0;
  assign dvi_d4      = 1;
  assign dvi_d5      = 0;
  assign dvi_d6      = 1;
  assign dvi_d7      = 0;
  assign dvi_d8      = 1;
  assign dvi_d9      = 0;
  assign dvi_d10     = 1;
  assign dvi_d11     = 0;

  assign gpio_led_n = 1;
  assign gpio_led_s = 0;

  assign gpio_led_0 = dvi_gpio1;
  assign gpio_led_1 = 0;
  assign gpio_led_2 = 1;
  assign gpio_led_3 = 0;
  assign gpio_led_4 = 1;
  assign gpio_led_5 = 0;
  assign gpio_led_6 = 1;
  assign gpio_led_7 = 0;

  wire dvi_xclk_p_unbuffered;
  wire dvi_xclk_n_unbuffered;
  wire dvi_xclk_fb;
  BUFG GBUF_FOR_DVI_CLOCK_N (.I(dvi_xclk_n_unbuffered), .O(dvi_xclk_n));
  BUFG GBUF_FOR_DVI_CLOCK_P (.I(dvi_xclk_p_unbuffered), .O(dvi_xclk_p));
  DCM  // 25Mhz VGA clock
   #(
      .CLKFX_MULTIPLY(4),
      .CLKFX_DIVIDE(16),
      .CLKIN_PERIOD("20 ns")
    ) vgadcm (
      .CLKIN    (clk),
      .CLKFB    (dvi_xclk_fb),
      .CLKFX    (dvi_xclk_p_unbuffered),
      .CLKFX180 (dvi_xclk_n_unbuffered),
      .CLK0     (dvi_xclk_fb)
    );

  wire [31:0] vga_pixel_addr_;
  wire        vga_pixel_r;
  wire        vga_pixel_a_;
  reg         vga_pixel_a;
  assign vga_pixel_a_ = vga_pixel_a;
  wire [18:0] inAddr;

  reg we;
  wire [2:0] mem_out;
  wire  [31:0] vga_pixel_data;
  assign vga_pixel_data = {
             8'b0,
             mem_out[2], 7'b0,
             mem_out[1], 7'b0,
             mem_out[0], 7'b0
  };

  assign inAddr = inX_d + (inY_d * 640);

  vram vram(clk, !rst, we, inAddr[18:0], vga_pixel_addr_[20:2], inData_d, , mem_out);

  wb_vga wb_vga(
	.wb_clk_i(clk),
	.wb_rst_i(rst),
	
	.fbwb_adr_o(vga_pixel_addr_),
	.fbwb_stb_o(vga_pixel_r),
	.fbwb_ack_i(vga_pixel_a_),
	.fbwb_dat_i(vga_pixel_data),

	/* VGA signals */
        .vga_clk(dvi_xclk),
        .vga_psave(vga_psave),
        .vga_hsync(dvi_h),
        .vga_vsync(dvi_v),
        .vga_sync(vga_sync),
        .vga_blank(vga_blank),
        .vga_r(vga_r),
        .vga_g(vga_g),
        .vga_b(vga_b)
        // .vga_clkout(vga_clkout)
  );

  always @(posedge clk) begin

    if (rst) begin
      `reset
    end else begin
      `cleanup
      vga_pixel_a <= vga_pixel_r;

      if (`inX_full && `inY_full && `inData_full) begin
         we <= 1;
         `drain_inX
         `drain_inY
         `drain_inData
      end else begin
         we <= 0;
      end

    end
  end

== Constants ========================================================

== Test ==============================================================
#skip

#ship debug : Debug

== Contributors =========================================================
Adam Megacz <megacz@cs.berkeley.edu>