682 nVious Graphics

682 : nVious Graphics

Design render

How it works

This circuit adds retro graphics to existing Tiny Tapeout projects. Several dozen previous and current projects make use of the 7-segment LED display. This project leverages those existing circuits as a source input by connecting their output to the input of this circuit and then connecting this circuit to a VGA display. Potentially, the VSYNC signal could even be connected to the source circuit to drive the clock and achieve frame synchronization--call it Tapeout Synchronization, or T-SYNC.

box art

Below is an example of a frame from the VGA (640 x 480 @ 60 FPS) output.

example VGA output

How to test

Basic Functionality

No source input required. Plug into a VGA monitor, select this circuit to test, clock it at 25.175 MHz and reset. There is a VGA demo that runs without input, but this circuit also accepts 8-bit input on the ui_io[7:0] pins to display a virtual 7-segment LED display (with decimal).

External Input

To test the user input functionality, connect the ui_io[7:0] pins to another source input. The idea is that this would be a possibly useful graphical extension to the dozens of existing projects that utilize the 7-segment LED display to show their results on a monitor.

External hardware

Requires the TinyVGA PMOD

IO

#InputOutputBidirectional
0Segment AR1
1Segment BG1
2Segment CB1
3Segment DVSync
4Segment ER0
5Segment FG0
6Segment GB0
7Segment HHSync

Chip location

Controller Mux Mux Mux Mux Mux Mux Mux Mux Mux Analog Mux Mux Mux Mux Mux Mux Mux Mux Mux Mux Analog Mux Mux Mux Mux Analog Mux Mux Mux Mux Mux Mux tt_um_chip_rom (Chip ROM) tt_um_factory_test (Tiny Tapeout Factory Test) tt_um_oscillating_bones (Oscillating Bones) tt_um_rebelmike_incrementer (Incrementer) tt_um_rebeccargb_tt09ball_gdsart (TT09Ball GDS Art) tt_um_tt_tinyQV (TinyQV 'Asteroids' - Crowdsourced Risc-V SoC) tt_um_DalinEM_asic_1 (ASIC) tt_um_urish_simon (Simon Says memory game) tt_um_rburt16_bias_generator (Bias Generator) tt_um_librelane3_test (Tiny Tapeout LibreLane 3 Test) tt_um_10_vga_crossyroad (Crossyroad) tt_um_rebeccargb_universal_decoder (Universal Binary to Segment Decoder) tt_um_rebeccargb_hardware_utf8 (Hardware UTF Encoder/Decoder) tt_um_rebeccargb_intercal_alu (INTERCAL ALU) tt_um_rebeccargb_dipped (Densely Packed Decimal) tt_um_rebeccargb_styler (Styler) tt_um_rebeccargb_vga_timing_experiments (VGA Timing Experiments) tt_um_rebeccargb_colorbars (Color Bars) tt_um_rebeccargb_vga_pride (VGA Pride) tt_um_cw_vref (Current-Mode Bandgap Reference) tt_um_tinytapeout_logo_screensaver (VGA Screensaver with Tiny Tapeout Logo) tt_um_rburt16_opamp_3stage (OpAmp 3stage) tt_um_gamepad_pmod_demo (Gamepad Pmod Demo) tt_um_micro_tiles_container (Micro tile container) tt_um_virantha_enigma (Enigma - 52-bit Key Length) tt_um_jamesrosssharp_1bitam (1bit_am_sdr) tt_um_jamesrosssharp_tiny1bitam (Tiny 1-bit AM Radio) tt_um_MichaelBell_rle_vga (RLE Video Player) tt_um_MichaelBell_mandelbrot (VGA Mandelbrot) tt_um_murmann_group (Decimation Filter for Incremental and Regular Delta-Sigma Modulators) tt_um_betz_morse_keyer (Morse Code Keyer) tt_um_urish_giant_ringosc (Giant Ring Oscillator (3853 inverters)) tt_um_tiny_pll (Tiny PLL) tt_um_tc503_countdown_timer (Countdown Timer) tt_um_richardgonzalez_ped_traff_light (Pedestrian Traffic Light) tt_um_analog_factory_test (TT08 Analog Factory Test) tt_um_alexandercoabad_mixedsignal (mixedsignal) tt_um_tgrillz_sixSidedDie (Six Sided Die) tt_um_mattvenn_analog_ring_osc (Ring Oscillators) tt_um_vga_clock (VGA clock) tt_um_mattvenn_r2r_dac_3v3 (Analog 8 bit 3.3v R2R DAC) tt_um_mattvenn_spi_test (SPI test) tt_um_quarren42_demoscene_top (asic design is my passion) tt_um_micro_tiles_container_group2 (Micro tile container (group 2)) tt_um_z2a_rgb_mixer (RGB Mixer demo) tt_um_frequency_counter (Frequency counter) tt_um_urish_sic1 (SIC-1 8-bit SUBLEQ Single Instruction Computer) tt_um_tobi_mckellar_top (Capacitive Touch Sensor) tt_um_log_afpm (16-bit Logarithmic Approximate Floating Point Multiplier) tt_um_uwasic_dinogame (UW ASIC - Optimized Dino) tt_um_ece298a_8_bit_cpu_top (8-Bit CPU) tt_um_tqv_peripheral_harness (Rotary Encoder Peripheral) tt_um_led_matrix_driver (SPI LED Matrix Driver) tt_um_2048_vga_game (2048 sliding tile puzzle game (VGA)) tt_um_mac (MAC) tt_um_dpmunit (DPM_Unit) tt_um_nitelich_riscyjr (RISCY Jr.) tt_um_nitelich_conway (Conway's GoL) tt_um_pwen (Pulse Width Encoder) tt_um_mcs4_cpu (MCS-4 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Generator) tt_um_LIF_neuron (AFM_LIF) tt_um_rebelmike_register (Circulating register test) tt_um_MichaelBell_hs_mul (8b10b decoder and multiplier) tt_um_SNPU (random_latch) tt_um_rejunity_atari2600 (Atari 2600) tt_um_bit_serial_cpu_top (16-bit bit-serial CPU) tt_um_semaforo (semaforo) tt_um_bleeptrack_cc1 (Cross stitch Creatures #1) tt_um_bleeptrack_cc2 (Cross stitch Creatures #2) tt_um_bleeptrack_cc3 (Cross stitch Creatures #3) tt_um_bleeptrack_cc4 (Cross stitch Creatures #4) tt_um_bitty (Bitty) tt_um_spi2ws2811x16 (spi2ws2811x8) tt_um_uart_spi (UART and SPI Communication blocks with loopback) tt_um_urish_charge_pump (Dickson Charge Pump) tt_um_adc_dac_tern_alu (adc_dac_BCT_addr_ALU_STI) tt_um_sky1 (GD Sky Processor) tt_um_fifo (ASYNCHRONOUS FIFO) tt_um_TT16 (Asynchronous FIFO) tt_um_axi4lite_top (Axi4_Lite) tt_um_TT06_pwm (PWM Generator) tt_um_hack_cpu (HACK CPU) tt_um_marxkar_jtag (JTAG CONTROLLER) tt_um_cache_controller (Simple Cache Controller) tt_um_stopwatchtop (Stopwatch with 7-seg Display) tt_um_adpll (all-digital pll) tt_um_tnt_rom_test (TT09 SKY130 ROM Test) tt_um_tnt_rom_nolvt_test (TT09 SKY130 ROM Test (no LVT variant)) tt_um_wokwi_414120207283716097 (fulladder) tt_um_kianV_rv32ima_uLinux_SoC (KianV uLinux SoC) tt_um_tv_b_gone_rom (TV-B-Gone-EU) Available Available Available Available Available Available Available Available Available Available Available Available Available