Pure Silicon Demo Coding: No CPU, No Memory, Just 4k Gates
Pure Silicon Demo Coding: No CPU, No Memory, Just 4k Gates Dec 19, 2025 In addition to the VGA donut, I submitted two other entries in the Tiny Tapeout 8 demo competition, where you submit a “tiny” ASIC design (room for about 4000 logic gates) that outputs 2-bit RGB to a VGA port and 1-bit audio to a speaker. One was a an old school C64/Amiga intro type of thing, and the other was a nyan cat. “TT08” intro video unavailable Click to play — video loops imperfectly but the hardware loop is seamless The intro features a background starfield, a panning 3D checkerboard with colorful tiles, and wavy scrolling text which casts a shadow onto the checkerboard. I was inspired by lft’s first AVR demo Craft to add a little cyan oscilloscope to the side of the screen as well. The size limit was two…
