Appears On
A two-voice AY chip arrangement of a Beatles classic, with selectable tempo and a live channel status display driven by carefully sequenced DATA statements.
A BASIC arrangement of Chopin's Prelude drives the AY-3-8912 chip directly, blending three-channel register writes with BEEP calls and a user-adjustable tempo control.
A classic ELIZA psychiatrist chatbot that drives its keyword-matching engine with a separately loaded machine code routine, blending BASIC responses with fast Z80 string searching.
A simultaneous-equations quiz that generates guaranteed integer solutions and reveals them with flashing highlights — can you beat it before pressing any key?
A colour-rich French vocabulary quiz that randomly selects questions without repeats, rewards correct answers with escalating beeps, and tracks your score across up to 20 words.
A configurable mouse population genetics simulator that tracks allele frequencies across 50 generations, complete with a UDG mouse icon and live selection-pressure modelling.
A physics-driven bouncing ball with distinct wall-collision sounds gradually widens its arc across a pixel-drawn enclosure until it comes to rest—then relaunches with more speed.
An interactive PCB diagram of the ZX Spectrum Issue 3 board, with block-graphic components, vector-drawn bus lines, expansion-port pinout, and detailed on-screen explanations of every chip.
A full Conway's Life implementation with a cursor-driven cell editor and machine-code evolution engine, loaded from tape and driven by a BASIC menu shell.
A complete rendition of Mozart's K. 545 sonata encoded purely in BEEP commands, with clever transposition tricks and reusable pattern subroutines packed into under 200 lines.
A multiplication quiz that rewards correct answers with an arcade money-catching game, complete with UDG sprites, chip sound, and a running bank balance.
Enter any two electrical values and this Ohm's Law calculator instantly derives voltage, current, resistance, and power using all six possible formula pairs.
A self-looping generative sound program that drives the AY-3-8912 chip through random frequency sweeps, noise bursts, and probabilistic pauses to create endless ambient tones.
A playable piano simulator with custom UDG key graphics, three octave modes, and nine adjustable note durations—all driven by a single BEEP command per keypress.
A self-contained quiz authoring tool that lets you type questions and answers, saves them to tape, then tests you with hints and a two-attempt scoring system.
Build your own quiz, get hints when you're stuck, and earn bonus points for first-try answers — then save the whole thing as a standalone program.
A memory-training spelling game that flashes a phrase, hides it, then checks your typed answer — with a subtle string-comparison trick buried in the logic.
A 30-question spelling quiz that shuffles correct and misspelled options randomly — but two of its three difficulty levels were never finished.
A pixel-magnifying spelling game that renders scrambled letters as giant mosaics and lets you hunt them down with a joystick or type your answer at the keyboard.
This random sentence generator lets you define custom word-order templates or choose from seven presets, then displays the results in a striking vertical typographic layout.
