ECE 448: Lab 4 VGA Display Mini-Pacman. Flexibility in the Second Part of the Semester Lab 4: VGA...

ECE 448: Lab 4

VGA Display Mini-Pacman

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

Chapter 12, VGA Controller II: Text

•Nexys3 Reference Manual

VGA Port, pages 15-17

7

Lab4 Exercise 1

Displaying synchronization signals on the oscilloscope

• Develop a testbench for the circuit, described in the figure above.• 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.

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

Lab 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_exercise1

clk

resethsync

rgbsw

vsync

35

Interface

Use of switches

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

Specification of colors of three objects

Specification of dimensions of the ball

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


Introduction to Lab 4

Game Characters and Maze

Shadow InkyPacman Diamond

Task 1: Displaying the maze (Points: 25%)

• Maze Color: Blue• Color Generator: Selects colors for the background and

maze• VGA Controller: Sync generator

Task 2: Displaying Diamonds in four corners (Points:10%)

• Diamond Color: Magenta• The diamonds should be stationary objects placed in four corners

shown above.

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

• Inky should move in the direction shown above

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

• Shadow should move in the direction shown above• Shadow and Inky should not collide with each other.

Task 5: Introduce “Pacman”(Points:25%)

• Use four push buttons (BTNU for Up, BTND for Down, BTNL for Left and BTNR for Right movement) to control Pacman’s movement.

• Pacman should keep moving in one direction until any other button is pressed.

• The goal of the Pacman is to get all four Diamonds without collision with any of the Ghost characters.

Task 5 : Displaying score and number of lives left on VGA display (Points: 10%)

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

•Each Diamond carries 200 points.

•Whenever Pacman eats any of the Diamonds, the count on the VGA display should increment and display the total score.

•Pacman should have three lives initially. Every collision with Shadow or Inky should result in loss of one life. The count of remaining lives should also be updated on the VGA display . After three such collisions, the game will be over.

•When Pacman eats all four diamonds, this event should pause the game, and YOU WON should be displayed on the VGA display.

ECE 448: Lab 4 VGA Display Mini-Pacman. Flexibility in the Second Part of the Semester Lab 4: VGA...

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