ECE 448: Lab 6 VGA Display (mini chess game)

1. ECE 448: Lab 6 VGA Display (mini chess game)

2. Video Graphic Array (VGA) Resolution: 640x480 Display: 16 colors (4 bits), 256 colors (8 bits) Refresh Rate: 25Hz, 30Hz, 60Hz (frames / second) RGB: Red, Green and Blue colors Monitor technology: Cathode Ray Tube (CRT)

3. VGA 15 Pin

4. VGA Monitor 0 639 0 Horizontal Flyback Horizontal Trace Vertical Flyback 479

5. VGA Control Signal Timing 25.6 us 26.24 us 26.24 us 30.08 us 30.08 us 30.08 us Resolution 640x480 32 us 32 us 32 us 15.36 ms 15.68 ms 15.744 ms 16.8ms

6. VGA Control Signal Timing Frequency 25Mhz 640 clock cycles 26.24 us 656 clock cycles 30.08 us 30.08 us 752 clock cycles Resolution 640x480 32 us 32 us 800 clock cycles 480 lines 490 lines 492 lines 525 lines

7. PINs on Board NET "HS" LOC = "J14" | DRIVE = 2 | PULLUP ; NET "VS" LOC = "K13" | DRIVE = 2 | PULLUP ; NET "OutRed<2>" LOC = "F13" | DRIVE = 2 | PULLUP NET "OutRed<1>" LOC = "D13" | DRIVE = 2 | PULLUP ; NET "OutRed<0>" LOC = "C14" | DRIVE = 2 | PULLUP ; We do not use this pin. NET "OutGreen<2>" LOC = "G14" | DRIVE = 2 | PULLUP; NET "OutGreen<1>" LOC = "G13" | DRIVE = 2 | PULLUP ; NET "OutGreen<0>" LOC = "F14" | DRIVE = 2 | PULLUP ; We do not use this pin. NET "OutBlue<2>" LOC = "J13" | DRIVE = 2 | PULLUP ; NET "OutBlue<1>" LOC = "H13" | DRIVE = 2 | PULLUP ;

8. Color Generator External Control 12 x_pixel RGB_color_code Color Generator 10 6 y_pixel 2 bits for Red component 2 bits for Green component 2 bits for Blue component • Output can be • generated on the fly, or • read from a precomputed look-up table (stored in BRAM)

9. Task 1: Displaying chessboard(2pts single person, 1.5pts teams) 80 pixels Color 1 60 lines Color 2 Color 2 Button 0 : cycle through 16 colors for color 1 Button 1 : cycle through 16 colors for color 2

10. Task 2: Displaying piece on the chessboard(2pts single person, 1.5pts teams) Circle represents a bishop Square represents a rook 80 pixels Color 1 60 lines Color 2 Color 2 Color 3 Piece Button 0 : cycle through 16 colors for color 1 Button 1 : cycle through 16 colors for color 2 Button 2 : cycle through 16 colors for color 3

11. Task 3: Moving piece (one-space) on the chessboard (rook selected) 80 pixels Color 1 60 lines Color 2 Color 2 Color 3 Piece Switch(7)=‘1’ Button 0 : Move piece one square up Button 1 : Move piece one square down Button 2 : Move piece one square left Button 3 : Move piece one square right Switch(7)=‘0’ Button 0 : cycle through 16 colors for color 1 Button 1 : cycle through 16 colors for color 2 Button 2 : cycle through 16 colors for color 3

12. Task 3: Moving piece (one-space) on the chessboard (bishop selected)entire task 3: (2pts single person, 1.5pts teams) 80 pixels Color 1 60 lines Color 2 Color 2 Color 3 Piece Switch(7)=‘1’ Button 0 : Move piece diagonally to the upper left Button 1 : Move piece diagonally to the upper right Button 2 : Move piece diagonally to the lower left Button 3 : Move piece diagonally to the lower right Switch(7)=‘0’ Button 0 : cycle through 16 colors for color 1 Button 1 : cycle through 16 colors for color 2 Button 2 : cycle through 16 colors for color 3

13. Task 4: Moving piece (multi-spaces) on the chessboard (rook selected) 80 pixels Color 1 60 lines Color 2 Color 2 Color 3 Piece Switch(7)=‘1’ Button 0 : Move piece one square up Button 1 : Move piece one square down Button 2 : Move piece one square left Button 3 : Move piece one square right Switch(7)=‘0’ Button 0 : cycle through 16 colors for color 1 Button 1 : cycle through 16 colors for color 2 Button 2 : cycle through 16 colors for color 3

14. Task 4: Moving piece (multi-spaces) on the chessboard (bishop selected)entire task 4: (2pts bonus single person, 1.5pts required for teams) 80 pixels Color 1 60 lines Color 2 Color 2 Color 3 Piece Switch(7)=‘1’ Button 0 : Move piece diagonally to the upper left Button 1 : Move piece diagonally to the upper right Button 2 : Move piece diagonally to the lower left Button 3 : Move piece diagonally to the lower right Switch(7)=‘0’ Button 0 : cycle through 16 colors for color 1 Button 1 : cycle through 16 colors for color 2 Button 2 : cycle through 16 colors for color 3

15. Task 5(2pts bonus single person, 1.5pts bonus for teams) • Add a Knight to the possible pieces if switch (3) =‘1’ • Use the buttons however you see fit to allow the knight to move in the 8 legal ways.

16. Rules • If a movement cannot be done (e.g. the move would cause the piece to go off the board) LED 7 should light up and the piece should not move from its previous location. • Other than LED 7 all led and Seven Segment displays can be used to print out any information on the state of the execution.

17. Switch functions • Switches 0-1 determine current task “00” task 1 “01” task 2 “10” task 3 “11” task 4 or 5 • Switches 2 and 3 determine the type of piece selected. Sw(3) ‘0’ sw(2) selects between bishop (0) and rook (1) ‘1’ piece is a Knight (task 5)

18. Switch functions (continued) • Switches 4-6 determine movement amount in tasks 4 and 5 • Switch 7 selects between change color mode and move piece mode. If sw(7) = ‘0’ then up down buttons change only the color. If sw(7)=‘1’ then the buttons give the direction of the movement.

19. Button Functions • Button 0 – up or upper left • Button 1 – down or upper right • Button 2 – left or lower left • Button 3 – right or lower right