803 Tiny Tapeout Exercise

803 : Tiny Tapeout Exercise

Design render

How it works

The eight input pins are split into two groups of four (REG0_0-3 and REG1_0-3). The result of adding the two numbers is stored as a 5-bit number in pins RESULT_0 to RESULT_4.

How to test

Go through all pairs of 4-bit numbers and check the output is the sum.

External hardware

No external hardware is used.

IO

#InputOutputBidirectional
0REG0_0RESULT_0
1REG0_1RESULT_1
2REG0_2RESULT_2
3REG0_3RESULT_3
4REG1_0RESULT_4
5REG1_1
6REG1_2
7REG1_3

Chip location

Controller Mux 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_tetrahedral_oscillator (Tetrahedral Oscillator) tt_um_urish_simon (Simon Says memory game) tt_um_c4m_spsram_direct (TTSKY-SPSRAM-direct) tt_um_bgr (sky130 Bandgap Reference) tt_um_floating_bulk_test_2 (Floating-bulk-test-2) tt_um_sker (Bomberman) tt_um_pzhu2 (Hardware Triangle Rasterizer with VGA Output) tt_um_nlanderso_morse_code (Morse Code Translator) tt_um_peterhan_ReactionGame (Reaction Time Game) tt_um_minmanrox_drone (Drone Flight Controller) tt_um_tiny3d_kevinqian11 (Tiny3D) tt_um_abhinavputhran_raycast (raycaster) tt_um_sillylad_top (Tiny Rainbow Snake Game) tt_um_akim_tinydma (TinyDMA-2C) tt_um_jenny82121027_axi4lite (AXI4-Lite Slave Register Demo) tt_um_Edward2005lol_Slot_Machine_Top (Slot Machine) tt_um_amin_hong_ooo_cpu (tiny OoO CPU) tt_um_flappy_vga_Akul18 (Flappy VGA) tt_um_vidishac2004_calc (Keypad Calculator) tt_um_eric_lcc (Tiny_Tapeout_Launch_Controller) tt_um_rwnt_vgatest (Intro_VGA_Playground) tt_um_gurtej_randhawa1_pulsemon8 (PulseMon8) tt_um_28add11_latchup (latchup2026-28add11) tt_um_noah_azz_demo (My First TT Demo) tt_um_llhtimlam_movingscreen (movingscreen) tt_um_harveywong85_harveywilly (harveywilly) tt_um_theandelope_checkers (Checkers) tt_um_rajum_iterativeMAC (Iterative MAC LATCHUP2026) tt_um_calebulboaca_calebcheckers (Caleb's Checkers) tt_um_vga_yusefkarim (ttsky-verilog-yk) tt_um_lfearn_latchup (Latch Up Tiny Tapeout) tt_um_ww_charlieplex (7x8 Charlieplex Array Controller) tt_um_zlj8800_tiny_tapeout_v2 (Chipping Away to Learn about The Chips) tt_um_ocpu (OCPU) tt_um_aelobo (TinyPomodoro) tt_um_jasonbrave_terre (Terre VGA) tt_um_mosbius (mini mosbius) tt_um_fabulous_sky_26b (Tiny FABulous FPGA) tt_um_cycho (Mini Memory Controller) tt_um_erika24 (TinyFarm) tt_um_wokwi_463101366305871873 (Tiny Laura L) tt_um_pcs_link_lite (PCS Lite: Asynchronous 8b10b SerDes) tt_um_sienahlee (18244-s26-tiny-nn) tt_um_basic8 (Basic8 CPU) tt_um_basic_na (basic_national_anthem_buzzer) tt_um_datiuemm (IEEE MBIST & ECC for RAM 8x32) tt_um_CFG_WDT (Configurable WDT) tt_um_top (IEEE_henon) tt_um_fidel_makatia_digital_tapeout (8-bit Accumulator CPU SoC) tt_um_garage_project (IEEE_UPP_Garage unit control) tt_um_wokwi_462595774777167873 (Bypass Universal) tt_um_pwm_4ch (IEEE Multi-Channel PWM Controller ) tt_um_amarjay (mini_cpu) tt_um_blackjack (ttsky-blackjack) tt_um_bartu_kripto (Tiny Crypto Core) tt_um_umitanik_matmul3x3 (3x3 Serial Matrix Multiplier (4-bit)) tt_um_tnt_mosbius (tnt's variant of SKY130 mini-MOSbius) tt_um_rule30_vga (IEEE Rule 30 Cellular Automaton VGA Display) tt_um_authQV (authQV RISC-V CPU) tt_um_nn_3x3 (3x3 Hardware Neural Network (Programmable TPU)) tt_um_top_module_16_mips (16-bit MIPS Single Cycle Processor) tt_um_auth_dmac (AUTh DMA Controller) tt_um_puf (IEEE Ring Oscillator PUF) tt_um_jacob_kebaso_4bit_cpu (Nibble - 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