38 Pong-VGA

38 : Pong-VGA

Design render
  • Author: Victor Zayakov
  • Description: Pong game over a VGA connection
  • GitHub repository
  • Clock: 50000000 Hz

How it works

This project is an implementation of the classic Pong video game. The interface is VGA, and the game will be displayed when connected to a monitor using a VGA cable. This includes all elements of the game: the two paddles and the ball, and a scoreboard.

The VGA protocol is implemented in hardware using Counter modules, RangeCheck modules, and an FSM to control them. It follows the VGA specification of 640x480 resolution at 60Hz, and operates using a 50MHz clock signal.

The rest of the hardware for the Pong video game works on top of the VGA module.

How to test

The game can be tested through a direct connection to a monitor over VGA. Four switches and one button are required to interact with the game: An up/down switch and move/no-move switch for each of the two players, and one button for serving the ball.

To test the HDL design, one can compare the timing of all 8 VGA pins to the industry-standard timing defined here: http://www.tinyvga.com/vga-timing/640x480@60Hz

External hardware

The game requires four switches and one button to play, as mentioned above. It also requires an external splitter for each of the three VGA color signals. This is to split each of VGA_R, VGA_G and VGA_B from 1-bit to 8-bit signals. These splitters can be placed on an external PCB.

IO

#InputOutputBidirectional
0R_move_switchVGA_CLK
1R_up_switchVGA_BLANK_N
2L_move_switchVGA_SYNC_N
3L_up_switchVGA_VS
4serve_L_buttonVGA_HS
5VGA_R
6VGA_G
7VGA_B

Chip location

Controller Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Analog Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Analog Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux tt_um_chip_rom (Chip ROM) tt_um_factory_test (TinyTapeout 7 Factory Test) tt_um_analog_factory_test (TT07 Analog Factory Test) tt_um_urish_charge_pump (Dickson Charge Pump) tt_um_adennen_inverter (Aron's analog buffer test) tt_um_rejunity_z80 (Zilog Z80) tt_um_kianv_bare_metal (KianV RISC-V RV32E Baremetal SoC) tt_um_macros77_subneg (SUBNEG CPU) tt_um_eater_8bit (Tiny Eater 8 Bit) tt_um_ender_clock (clock) tt_um_wokwi_397140982440144897 (7-Seg 'Tiny Tapeout' Display) tt_um_wokwi_397142450561071105 (Padlock) tt_um_Burrows_Katie (QIF Neuron) tt_um_vga_clock (VGA clock) tt_um_aidenfoxivey (CRC-8 CCITT) tt_um_PUF (Reversible logic based Ring-Oscillator Physically Unclonable Function (RO-PUF)) tt_um_devinatkin_dual_oscillator (dual oscillator) tt_um_urish_simon (Simon Says memory game) tt_um_ajstein_stopwatch (Stopwatch Project) 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(RF_peripheral_circuits) tt_um_jleightcap (fractran-tt) tt_um_wokwi_399518371950068737 (Full-adder out of a kmap) tt_um_davidparent_hdl (PRBS Generator) tt_um_adia_psu_seq_test (Adiabatic PSU sequencer test) tt_um_spacecat_chan_john_pong_the_second (John Pong The Second) tt_um_rajum_iterativeMAC (Iterative MAC) tt_um_asinghani_tinywspr (TinyWSPR) tt_um_thatoddmailbox (DuckCPU) tt_um_rejunity_vga (VGA Checkers) tt_um_8bitadder (Ripple Carry Adder 8 bit) tt_um_vzayakov_top (Pong-VGA) tt_um_pa1mantri_cdc_fifo (Clock Domain Crossing FIFO) Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available Available 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