Lab notes

• Aug 28, 2022 : Quartus Setup

Lab supporting documents

• Pin Assignments : DE0_TOP.qsf
• Top level file with all pins: DE0_TOP.v
• DE0 FPGA Manual : DEO User Manual

Prelabs

• Prelab for Lab 5 : Lab 5 Prelab

Additional Resources

• Intel/Altera Document on Synthesis of Math Functions : Advanced Synthesis Cookbook
• Accompanying Cookbook code
• Parker Dillmann’s DE0_Drivers

VGA Driver Files

• VGA Video Tutorial (Must be logged in to you Umaine account to view) : Video Tutorial
  • There is a mistake in the video when instantiating the make box module, it should be make_box make_first_player_paddle( and not module make_first_player make_box(
• Example simple top level : VGA_top.v
• DE0 VGA Driver Module : DE0_VGA.v
• PLL (Phase Locked Loop) Verilog File : PLL_PIXEL_CLK.v
• QSF File : VGA_top.qsf

Testbenches

• Tutorial video on testbenches (Must be logged in to you Umaine account to view) : Testbenches Tutorial

How to display text on VGA

• You will need the following four files
  • display_message.v
  • draw_ascii.v
  • rom_async.v
  • font_unscii_8x8_latin_uc.mem
• Usage:

wire [11:0]  text_message_pixel_color;
wire [0:8*7-1] msg_7char = "RUNNING"; // only supports all casp
display_message #(
                     .MSG_LENGTH(7), // length of message
                     .char_width(32), // char width in pixels
                     .char_height(32), // char height in pixels
                     .INIT_F("font_unscii_8x8_latin_uc.mem") // font file
                     ) disp_msg
     (.X_pix(X_pix), // current X_pix being drawn
      .Y_pix(Y_pix), // current Y_pix being drawn
      .MSG(msg_7char), // Message as 8-bit ascii value
      .msg_x(RESX / 2 - 4*3*BALLWIDTH), // X pos of left top corner of msg
      .msg_y(RESY / 2 - 2*BALLWIDTH), // Y pos of left top corner of msg
      .char_color(12'b1100_0000_0000), // text color
      .text_bg_color(12'b1111_1111_1111), // text background color
      .prev_layer_color(BGCOLOR), // color from previous layers 
      .pixel_color(text_message_pixel_color)); // output wire for pixel color


always @(posedge pixel_clk)
	begin
      if (ballpixel)
        pixel_color <= BALLCOLOR;
      else if (paddlepixel)
        pixel_color <= PADDLECOLOR;
      else
        pixel_color <= text_message_pixel_color;
	end