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`timescale 1 ns/ 100 ps
module VGAController(
input clk, // 100 MHz System Clock
input reset, // Reset Signal
output hSync, // H Sync Signal
output vSync, // Veritcal Sync Signal
output[3:0] VGA_R, // Red Signal Bits
output[3:0] VGA_G, // Green Signal Bits
output[3:0] VGA_B, // Blue Signal Bits
inout ps2_clk,
inout ps2_data,
input BTNC,
input BTNU,
input BTNL,
input BTNR,
input BTND
// output[14:0] LED
);
// Lab Memory Files Location
localparam FILES_PATH = "C:/Users/yg205/Downloads/lab6_kit/";
// Clock divider 100 MHz -> 25 MHz
wire clk25; // 25MHz clock
reg[1:0] pixCounter = 0; // Pixel counter to divide the clock
assign clk25 = pixCounter[1]; // Set the clock high whenever the second bit (2) is high
always @(posedge clk) begin
pixCounter <= pixCounter + 1; // Since the reg is only 3 bits, it will reset every 8 cycles
end
// VGA Timing Generation for a Standard VGA Screen
localparam
VIDEO_WIDTH = 640, // Standard VGA Width
VIDEO_HEIGHT = 480; // Standard VGA Height
wire active, screenEnd;
wire[9:0] x;
wire[8:0] y;
VGATimingGenerator #(
.HEIGHT(VIDEO_HEIGHT), // Use the standard VGA Values
.WIDTH(VIDEO_WIDTH))
Display(
.clk25(clk25), // 25MHz Pixel Clock
.reset(reset), // Reset Signal
.screenEnd(screenEnd), // High for one cycle when between two frames
.active(active), // High when drawing pixels
.hSync(hSync), // Set Generated H Signal
.vSync(vSync), // Set Generated V Signal
.x(x), // X Coordinate (from left)
.y(y)); // Y Coordinate (from top)
// Image Data to Map Pixel Location to Color Address
localparam
PIXEL_COUNT = VIDEO_WIDTH*VIDEO_HEIGHT, // Number of pixels on the screen
PIXEL_ADDRESS_WIDTH = $clog2(PIXEL_COUNT) + 1, // Use built in log2 command
BITS_PER_COLOR = 12, // Nexys A7 uses 12 bits/color
PALETTE_COLOR_COUNT = 256, // Number of Colors available
PALETTE_ADDRESS_WIDTH = $clog2(PALETTE_COLOR_COUNT) + 1; // Use built in log2 Command
wire[PIXEL_ADDRESS_WIDTH-1:0] imgAddress; // Image address for the image data
wire[PALETTE_ADDRESS_WIDTH-1:0] colorAddr; // Color address for the color palette
assign imgAddress = x + 640*y; // Address calculated coordinate
RAM #(
.DEPTH(PIXEL_COUNT), // Set RAM depth to contain every pixel
.DATA_WIDTH(PALETTE_ADDRESS_WIDTH), // Set data width according to the color palette
.ADDRESS_WIDTH(PIXEL_ADDRESS_WIDTH), // Set address with according to the pixel count
.MEMFILE({FILES_PATH, "image.mem"})) // Memory initialization
ImageData(
.clk(clk), // Falling edge of the 100 MHz clk
.addr(imgAddress), // Image data address
.dataOut(colorAddr), // Color palette address
.wEn(1'b0)); // We're always reading
// Color Palette to Map Color Address to 12-Bit Color
wire[BITS_PER_COLOR-1:0] colorData; // 12-bit color data at current pixel
RAM #(
.DEPTH(PALETTE_COLOR_COUNT), // Set depth to contain every color
.DATA_WIDTH(BITS_PER_COLOR), // Set data width according to the bits per color
.ADDRESS_WIDTH(PALETTE_ADDRESS_WIDTH), // Set address width according to the color count
.MEMFILE({FILES_PATH, "colors.mem"})) // Memory initialization
ColorPalette(
.clk(clk), // Rising edge of the 100 MHz clk
.addr(colorAddr), // Address from the ImageData RAM
.dataOut(colorData), // Color at current pixel
.wEn(1'b0)); // We're always reading
wire [7:0] rx_data;
wire read_data, busy, err;
Ps2Interface ps2(
ps2_clk,
ps2_data,
clk,
reset,
8'b0,
8'b0,
rx_data,
read_data,
busy,
err
);
reg [7:0] code_out;
initial begin
code_out = 8'h1c;
end
always @(read_data) begin
// pixCounter <= pixCounter + 1; // Since the reg is only 3 bits, it will reset every 8 cycles
if (rx_data != 8'hf0) begin
code_out = rx_data;
end
end
localparam
BITS_PER_ASCII = 7,
SPRITE_COUNT = 235000, //50*50,
SPRITE_ADDRESS_WIDTH = $clog2(SPRITE_COUNT) + 1;
wire[BITS_PER_ASCII-1:0] ascii_value; // 12-bit color data at current pixel
RAM #(
.DEPTH(PALETTE_COLOR_COUNT), // Set depth to contain every color
.DATA_WIDTH(BITS_PER_ASCII), // Set data width according to the bits per color
.ADDRESS_WIDTH(PALETTE_ADDRESS_WIDTH), // Set address width according to the color count
.MEMFILE({FILES_PATH, "ascii.mem"})) // Memory initialization
ASCIIDATA(
.clk(clk), // Rising edge of the 100 MHz clk
.addr(code_out), // Address from the ImageData RAM
.dataOut(ascii_value), // Color at current pixel
.wEn(1'b0)); // We're always reading
wire[18:0] scan_code;
// wire[BITS_PER_ASCII-1:0] ascii_val;
// assign ascii_val = 50;
assign scan_code = 50*50*(ascii_value-33) + currentPos;
wire spirte_on;
//Sprite mapping
RAM #(
.DEPTH(SPRITE_COUNT), // Set RAM depth to contain every pixel
.DATA_WIDTH(1), // Set data width according to the color palette
.ADDRESS_WIDTH(SPRITE_ADDRESS_WIDTH), // Set address with according to the pixel count
.MEMFILE({FILES_PATH, "sprites.mem"})) // Memory initialization
SPRITEDATA(
.clk(clk), // Falling edge of the 100 MHz clk
.addr(scan_code), // Image data address
.dataOut(spirte_on), // Color palette address
.wEn(1'b0)); // We're always reading
// Assign to output color from register if active
wire[BITS_PER_COLOR-1:0] colorOut; // Output color
wire [BITS_PER_COLOR-1:0] colorFinal;
assign colorFinal = (xCheck & yCheck) ? 12'd0 : colorData ;
assign colorOut = active ? colorFinal : 12'd0; // When not active, output black
// Quickly assign the output colors to their channels using concatenation
assign {VGA_R, VGA_G, VGA_B} = colorOut;
reg [9:0] ax = 10'd20;
reg [8:0] ay = 9'd20;
wire [9:0] maxX;
assign maxX = ax + 10'd50;
wire [8:0] maxY;
assign maxY = ay + 9'd50;
wire xCheck, yCheck;
assign xCheck = (x < maxX ? (x > ax) : 1'b0) & spirte_on;
assign yCheck = (y < maxY ? (y > ay) : 1'b0) & spirte_on;
//sprite on ids top left
// wire bottomR;
// assign bottomR = topR+2500;
wire [9:0] xOffset;
wire [8:0] yOffset;
wire [18:0] currentPos;
assign xOffset = x-ax;
assign yOffset = y-ay;
assign currentPos = xOffset*1+yOffset*50;
always @(posedge screenEnd) begin
// pixCounter <= pixCounter + 1; // Since the reg is only 3 bits, it will reset every 8 cycles
if (BTNR)
ax <= ax + BTNR;
else if (BTNL)
ax <= ax - BTNL;
else if (BTND)
ay <= ay + BTND;
else if (BTNU)
ay <= ay - BTNU;
end
endmodule
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