ECE 448: Lab 4 VGA Display The Frogger. Flexibility in the Second Part of the Semester Lab 4: VGA...

ECE 448: Lab 4

VGA Display The Frogger

Flexibility in the Second Part of the Semester

Lab 4: VGA display (2 weeks) – 8 points

Lab 5: Computer Graphics (2 weeks) – 8 points

Lab 6: PicoBlaze System (2 weeks) – 8 points

Lab 7: Logic Analyzer (in class) – 2 bonus points

Lab 4: VGA display (3 weeks) – 8 points

Lab 5: Computer Graphics or Lab 6: PicoBlaze System

(3 weeks) – 8 points

Lab 7: Logic Analyzer (in class) – 2 bonus points

Schedule A:

Schedule B:

Total: 24+2 points

Total: 16+2 points

Flexibility in the Second Part of the Semester

• Intended for students who do exceptionally well in the first part

of the semester ( ≥ 90% of points for Labs 1-3)

• An open-ended project proposed by students, the TAs, or the

instructor

• Can be done individually or in groups of two students

• Schedule: Detailed Specification (1 week)

Milestone 1 (2 weeks)

Milestone 2 (2 weeks)

Final Report & Deliverable (1 week)

Schedule A+:

Total: 25 points

Expected Project TasksSchedule A+: 1. Use of at least one complex input/output device

• VGA display• Keyboard or Mouse (USB-HID)• Ethernet, etc.

2. Use of on-chip embedded resources: BRAMs, DSP units or External on-board memory or Soft microcontroller core (e.g. Picoblaze)3. (bonus) Use of PMOD Accessory Boards implementing additional functions, e.g., A/D, D/A, motor drivers, sensors, cameras.

Lab 4 Exercises

6ECE 448 – FPGA and ASIC Design with VHDL

Reading

• P. Chu, FPGA Prototyping by VHDL Examples

Chapter 12, VGA Controller I: Graphic

• Nexys3 Reference Manual

VGA Port, pages 15-17

7

Lab 4 Exercise 1

Displaying synchronization signals on the oscilloscope

clk

reset

hsync

vsync

Observe these signals on

oscilloscope

vga_sync

Lab4_exercise1

hsync

vsync

pixel_x

pixel_y

video_on

p_tick

10

10

8

• Develop a testbench for the circuit, described in the figure on the previous slide.• Perform functional simulation, displaying ALL ports of vga_sync component.• Synthesize and implement the top-level circuit using provided UCF file • Perform timing simulation, displaying ALL ports of vga_sync component.• Perform experimental testing using oscilloscope, displaying clk, hsync, vsync.

Lab 4 Exercise 1: Tasks

9

Lab 4 Exercise 2

• Resolution: 640x480• Display: 8 colors (3 bits), 16 colors (4 bits),

64 colors (6 bits), 256 colors (8 bits)• Refresh Rate: 25Hz, 30Hz, 60Hz (frames / second)

Lab4_exercise2

clk

resethsync

rgbsw

vsync

35

Interface

Use of switches

Configuration : 1

(0,0) (639,0)

(639,479)(0,479)

Wall coordinates = (x_left = 32, x_right = 35)

Bar coordinates = (x_left = 600, x_right = 603, y_top = 204, y_bottom = 276)

Ball coordinates = (x_left = 480, x_right = 487, y_top = 38, y_bottom = 45)

Wall

Paddle bar

Ball

Configuration-1 ( sw(4) = ‘0’, sw(3..2) = “00”, sw(1..0) = “00” )

Configuration : 2

(0,0) (639,0)

(639,479)(0,479)




Wall

Paddle bar

Ball


Configuration : 3

(0,0) (639,0)

(639,479)(0,479)




Wall

Paddle bar

Ball


Configuration : 4

(0,0) (639,0)

(639,479)(0,479)




Wall

Paddle bar

Ball


Configuration : 5

(0,0) (639,0)

(639,479)(0,479)




Wall

Paddle bar

Ball


Configuration : 6

(0,0) (639,0)

(639,479)(0,479)

Wall coordinates = (y_top = 32, y_bottom = 35)



Wall

Paddle bar

Ball


Configuration : 7

(0,0) (639,0)

(639,479)(0,479)

Wall coordinates = (y_top = 445, y_bottom = 448)



Wall Paddle bar

Ball


Configuration : 8(0,0) (639,0)

(639,479)(0,479)




Wall Paddle bar

Ball


Specification of coordinates of three objects assuming sw(4)=0

Specification of colors of three objects

Specification of dimensions of the ball

Introduction to Lab 4

Game Objects and Background

CarFrog Wood Log

Water Zone

Street Zone

Safe Zone 1

Safe Zone 2

Task 1: Create Background (Points: 20%)

• Maze Color: Blue, Cyan, Black, and yellow • Color Generator: Selects colors for the background• VGA Controller: Sync generator

Task 2: Display Bricks (Points:10%)

• Brick Color: Magenta• The Bricks should be stationary objects placed at the top of water zone

shown above.

Task 3: Display and create movement of “logs” (Points: 15%)

• The upper row of logs should move horizontally to the right in a wrap-around manner.

• The lower row of logs should have the exact same movement pattern, but in the opposite direction, i.e., to the left.

Task 4: Display and create movement of character “cars” (Points:15%)

• The cars should also move in a wrap-around manner, i.e., toward left for the upper row of the cars and toward right for the lower row of the cars.

Task 5: Introduce “The Frog”(Points:25%)

• The movement of the Frog should be controlled by four push buttons (BTNU for Up, BTND for Down, BTNL for Left, and BTNR for Right).

• The Frog should move in the direction represented by the button pressed.

• The goal of the Frog is to reach any of the magenta bricks located at the top without colliding with any of the cars and without falling into the water.

Task 5 : Displaying score and number of lives left on VGA display (Points: 15%)

•Display the score and number of lives on VGA display.

•Every forward move on the street should result in 10 points.

•Each time the Frog successfully rides on any of the logs, 20 points should be added to the total score.

•The Frog should have three lives initially. Every collision with a car or fall into the water should result in the loss of one life.

•When the Frog reaches any of the Bricks, this event should pause the game, and YOU WON should be displayed on the VGA display.

ECE 448: Lab 4 VGA Display The Frogger. Flexibility in the Second Part of the Semester Lab 4: VGA...

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