A configurable checkbook ledger program that tracks debits, credits, check fees, and tax-deductible entries — with on-screen statements, printer output, and automatic file compaction.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Type any uppercase text and watch it scroll down the screen as large, colorful line-drawn letters — each character encoded as a series of PLOT and DRAW commands.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A continuously animated spinning wheel built from concentric circles and rotating spokes, driven by a Z80 machine code double-buffering routine for smooth animation.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Enter a target musical frequency, pick your material and shape, and this program calculates the exact length to cut and where to drill your wind chime.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Design a custom Yagi antenna for any frequency: enter the center frequency and element count, and get precise dimensions, gain, beamwidth, and construction advice instantly.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Look up the current time in any world city by name, powered by a machine code search routine and an expandable packed database you can extend yourself.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Enter any month and year to get a neatly formatted calendar printout, complete with correct leap-year handling and a built-in printer prompt.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Calculate the exact date of Easter Sunday for any year from 1900 to 2099, using a modular-arithmetic algorithm with hard-coded corrections for known edge cases.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A complete LOGO turtle-graphics interpreter in BASIC, supporting named procedure definitions, REPEAT loops, pen color, coordinate commands, and an interactive line editor.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Solve systems of up to 20 simultaneous equations using Gaussian elimination with partial pivoting, computing both the solution vector and the matrix determinant.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A transmission line impedance calculator that sweeps electrical distance in degrees, computing magnitude and phase angle with full rectangular-to-polar conversion.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A three-window demonstration system that uses machine code LDIR routines to save and restore screen regions, with UDG border graphics and user-definable window coordinates.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A counting game for young learners that spawns sprite-based objects on screen and quizzes the player — with audio-assisted correction when they get it wrong.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Draw a detailed Canadian map outline using encoded path strings, flood-fill provinces with machine code, then test your geography across 35 cities in two quiz modes.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A graphical calendar generator spanning 1583 to 9999 AD, with Zeller's Congruence day calculation, printer heading options, and full-year print mode.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A machine code utility that lets you define any rectangular screen region and scroll it up or down, with or without wrap-around, callable from your own BASIC programs.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Watch a text string dramatically "burst" outward from its center character by character, with a rising beep tone accompanying each animation frame.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A two-mode CHR$ explorer that quizzes you on ASCII codes against a ticking bomb timer, then lets you inspect every printable character's raw font bytes.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A font-remapping utility that rewrites every character definition in RAM, then auto-prints instructions before wiping itself — leaving behind a boldened printer font.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Guide your character across a dot-filled screen to safety while homing crushers zero in on your every move — can you survive?
computer_media, orig pub: 09.09.26, updated: 09.09.26
A hand-crafted television set screen display combining UDG characters, arc-based DRAW commands, and CIRCLE calls to render a detailed TV graphic with text labels.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Design T-pad and pi-pad resistive attenuators instantly — enter your impedances and desired dB loss, and get all three resistor values for both topologies with schematic diagrams.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A data-driven logo renderer that fires 260 PLOT/DRAW commands from compact DATA statements, then optionally sends the result to a printer with a linefeed POKE.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Type in any phone number and hear each digit dialed as a pair of synthesized tones — a software DTMF dialer built entirely in BASIC.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Enter a node count and scale factor to watch every point on a circle connect to every other point in an intricate geometric web.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Navigate your spacecraft through four increasingly dangerous sections — missile tunnel, asteroid field, winding passage, and landing pad — in this multi-stage survival game.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Load machine code at a user-specified address and run tape transfers at variable baud rates up to 3500 baud with this configurable turbo tape utility.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Explore the Mandelbrot set with character-mapped iteration shading and color banding — user-defined boundaries let you zoom into any region of the complex plane.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Defend your planet by blasting two distinct alien types before five land — a BASIC shoot-em-up with custom characters, pixel-precise collision detection, and persistent high scores.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Fire laser beams into a hidden 8×8×8 cube to locate five randomly placed atoms using 3D reflection physics — a spatial deduction challenge with illustrated instructions.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Hold a key to build speed, release at the right moment, and watch your stuntman attempt to clear a row of double-decker buses in this arcade jump game.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A naval strategy game with two AI difficulty levels — one fires randomly, the other hunts ships using a directional offset array after scoring a hit.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A travel-ready currency converter for Mexican peso shopping trips also packs metric unit conversions and plays a classic melody from a DATA-driven music engine.
computer_media, orig pub: 09.09.26, updated: 09.09.26
An animated four-stroke engine diagram cycles through induction, compression, ignition, and exhaust using custom-designed graphics and a piston that really moves.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A machine code sprite engine gets loaded, patched with address data at runtime, and repeatedly invoked to animate graphics in a tight BASIC loop.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Three classic sorting algorithms — Bubble, Insertion, and Shell Sort — packed as machine code inside REM statements, ready to sort fixed-length byte arrays via USR calls.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A fully featured peg solitaire game with UDG graphics, cursor-key support, move validation, boundary clamping, and musical fanfares for winning and losing.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Guide a growing snake around a dot-filled playfield, racing the clock while dodging your own body in this attribute-based collision game with machine code sound.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A plug-in chord library for three-channel sound hardware, providing GOSUB targets for major, minor, diminished, and augmented chords ready to drop into any program.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A joystick-controlled popup menu framework with UDG-drawn border boxes and a five-item menu bar, ready to drop into a graphics application.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Fit a polynomial of any degree up to 9 through up to 20 data points, then evaluate the result at any x — all using least squares and Cramer's rule.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A nine-inning baseball game with animated pitching, strategic swing choices, and base-running logic tracks your team of nine named players against the computer.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Enter each team's scoring stats and let this football predictor crunch the numbers to forecast which side comes out on top.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Record, replay, and save keyboard-played melodies using a computed GO TO dispatch that maps keypresses directly to musical note frequencies.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Type in the last four digits of your phone number and discover every possible word it could spell using classic telephone keypad letter mappings.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A six-player Yahtzee-style dice game with a sophisticated computer AI opponent that evaluates dice combinations and scoring strategy across twelve rounds of play.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Enter a fraction of the speed of light and watch Einstein's Twin Paradox unfold across a 16-year relativistic journey, with age differences shown to the nearest second.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A machine code–powered text scaler lets you render any string at custom height, width, slant, shading, and inverse settings with a single USR call.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A fully playable checkers game with computer AI, custom piece graphics, king promotion, and a coordinate-based move input system packed into under 170 lines of BASIC.
computer_media, orig pub: 09.09.26, updated: 09.09.26
Design and visualize a radio-control model airplane in top, side, and front views, with automatic CG calculation, wing loading, and area ratios — all interactively adjustable.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A BASIC loader that bolts full-size printer support onto the VU-CALC spreadsheet by POKEing a Z80 machine code routine and routing output through configurable column and row entry points.
computer_media, orig pub: 09.09.26, updated: 09.09.26
A six-enemy cannon assault game where letter commands push back attackers advancing across a 20-position grid — but random row shifts keep you guessing.
computer_media, orig pub: 09.05.26, updated: 09.05.26
Enter bend angles, radii, and leg lengths to instantly calculate the flat blank length and bend allowances needed for precise sheet-metal fabrication.
computer_media, orig pub: 09.04.26, updated: 09.04.26
A machine code routine that supercharges the built-in SCREEN$ function to recognize UDGs, software graphics, and standard characters by their character codes.
computer_media, orig pub: 09.03.26, updated: 09.03.26
A full Keplerian orbit propagator tracks real satellites in real time, computing azimuth, elevation, Doppler shift, and sun/shadow status for over a dozen spacecraft.
computer_media, orig pub: 09.03.26, updated: 09.03.26
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.
computer_media, orig pub: 03.06.26, updated: 09.02.26
A six-option telephone directory manager packs names and numbers into a 200-entry string array with built-in sorting and substring search.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Follow a ghostly Victorian heroine's diary clues through 29 haunted rooms in exactly ten moves — but the correct path is mathematically hidden in the data.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A seven-function stamp collection manager that stores up to 150 stamps with names and quantities, featuring search, add, delete with array compaction, and quantity adjustment.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Place resistors, capacitors, diodes, and NPN/PNP transistors on a live schematic canvas — all rendered with PLOT and DRAW from coordinate DATA tables.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Explore RAM one byte at a time with this interactive memory inspector — navigate forward, restart, print, or stop via a simple menu system.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Trace the full outline of the contiguous US using nothing but chained relative DRAW commands read from dozens of DATA statements.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Pilot your spaceship through eleven homing monsters using custom-drawn sprites, with enemies growing smarter and faster each wave you survive.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A keyboard-based memory matching game that hides numeric codes behind 18 keys arranged in a grid — find all 9 pairs in the fewest turns to beat your best score.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A clever number-formatting subroutine right-aligns decimal values across three columns, using user-defined functions to round and pad output automatically.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A ten-page text editor with cursor movement, character and line insertion/deletion, tape save/load, and multi-copy printer output — all in BASIC.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A fully featured Blackjack game with graphical card rendering, insurance bets, doubling down, and a surprise "Game Over" screen drawn entirely with vector graphics.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Guide your paddle with keys 5 and 8 to keep a bouncing ball in play in this minimalist one-player squash game written entirely in BASIC.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A two-player squash game with hardware port-scanned paddles, turn-based hitting rules, and a race to 21 points — all in pure BASIC.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A BASIC Q*bert clone with joystick control, procedurally drawn isometric pyramid, UDG sprites, and ATTR-based collision detection across escalating difficulty sheets.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Pilot a crosshair around a starfield to intercept falling UDG bombs before the 60-second timer expires — scoring depends on how precisely you aim.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A freehand pixel drawing tool with separate draw, erase, and reposition modes — all controlled from just four movement keys and two function keys.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Pilot a balloon through four increasingly treacherous maze stages, dodging asteroids and your own ink trail — with custom sprite characters and color-based collision detection.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Collect eight dungeon treasures in strict order while dodging three relentless goblins—and blast walls open with limited dynamite when your path is blocked.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Guide Santa through five increasingly brutal stages — blizzard, rooftop drop, chimney lift, snowball gauntlet, and a nail-biting altitude sprint — in this multi-stage Christmas action game.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Dodge, catch, and survive as cannon balls bounce unpredictably around the screen — can you protect your catchers before all 50 shots are gone?
computer_media, orig pub: 09.02.26, updated: 09.02.26
A three-stage arcade shooter with user-defined graphics, a bonus system, animated enemy wolves, and a full Hall of Fame name-entry screen.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Enter your current and target weight, specify your daily calorie intake, and this program calculates exactly how many days your diet will take.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Enter two dates and watch three sine-wave biorhythm cycles — Physical, Emotional, and Intellectual — plotted simultaneously across a full-width graph.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Flip every character in the display font upside-down by rearranging glyph pixel rows in RAM, then instantly restore the normal display with a single GOTO.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A technical drawing application's loader that auto-detects storage devices, configures six dot-matrix printers via machine code routines, and launches the main drawing engine.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Convert any standard 32-column screen to a 64-column hi-res layout using five modes, machine code routines, and built-in checksum verification.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Dodge four color-coded falling bombs with your ship, and survive long enough to face the speed increase that kicks in at 25 points.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Navigate a trap-filled maze against a ticking timer to find hidden treasure — but one wrong move with your bomb could blow up the prize!
computer_media, orig pub: 09.02.26, updated: 09.02.26
A dual-mode graphing tool plots physics data on a grid with labeled axes, lets you capture results with a printer copy, then returns to a styled menu.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Dodge falling snake-head obstacles by sliding left and right — collision detection reads directly from the screen in this fast-paced single-variable reflex game.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Print giant text banners on paper by reading character bitmaps straight from ROM — at three selectable sizes up to four times normal height.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A ready-to-borrow library of sound effects — telephone rings, sirens, galloping horses, explosions, and more — designed to drop straight into your own programs.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Pilot your block-graphic spaceship, dodge descending aliens, and rack up points in this action shooter with real-time sound effects and collision detection.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Guide your spider up and down the screen's edge to catch flies crawling across six rows before the timer runs out — a joystick-driven arcade challenge with custom UDG sprites.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Enter any number and watch a 4×4 magic square appear whose rows, columns, and diagonals all add up to exactly what you chose.
computer_media, orig pub: 09.02.26, updated: 09.02.26
Two sets of crossing lines drawn with XOR pixel logic build mesmerizing moiré interference patterns that regenerate in a new random color every cycle.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A fractal tree-drawer that simulates recursion using an explicit software stack and clever integer-ratio rotation — no trig functions required.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A sliding reaction-timing game where you must press a key at exactly the right moment to stop a moving character under the correct column — with three difficulty levels.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A comprehensive paired-data statistics suite covering means, standard deviation, regression, correlation, t-test, and graphical output — all in BASIC with a full instruction set.
computer_media, orig pub: 09.02.26, updated: 09.02.26
A RAM-based file manager and keyword search tool that pokes records directly into memory and calls machine code to hunt through them instantly.
computer_media, orig pub: 09.01.26, updated: 09.01.26
Navigate your raft through a zombie-infested swamp using arrow keys, avoiding the undead pursuer before it catches — and eats — you.
computer_media, orig pub: 09.01.26, updated: 09.01.26
Compare two stocks side by side using eleven fundamental financial ratios, with tape save/load support for preserving and reloading company data between sessions.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A fully interactive sound chip controller lets you sculpt three-channel tones, noise, envelope shapes, and more in real time with a graphical parameter display.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A full-featured complex number calculator supporting addition, subtraction, multiplication, and division with optional rectangular-to-polar conversion for each result.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A ten-page word processor with character insert/delete, caps lock toggle, multi-copy printing, and tape save/load — all packed into one BASIC listing.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A full I Ching oracle that randomly generates hexagrams using binary arithmetic, displays them graphically, and presents all 64 traditional interpretations with a moving-lines mutation feature.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A memory explorer that walks the variable area and decodes every variable type — including floating-point math and FOR-NEXT loop control blocks — into plain English.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A BASIC algebra grapher that draws a scaled coordinate grid and plots the parabola y = −x² + x with labeled Y-axis tick marks.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A fully playable two-player 3D Tic-Tac-Toe game on a 3×3×3 cube, with isometric block-graphic display and cumulative win scoring across all 49 possible lines.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Enter paired X/Y data, correct any mistakes, then watch this statistics utility plot the scatter graph and fitted regression line with R² accuracy.
computer_media, orig pub: 08.31.26, updated: 08.31.26
An actuarial life-table calculator that tracks survival and event probabilities across multiple intervals, applying standard censoring adjustments for withdrawn or lost subjects.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Guide your bucket across the screen to catch 30 random drips of water — can you beat your own high score in this quick arcade challenge?
computer_media, orig pub: 08.31.26, updated: 08.31.26
Pilot a rotating lander across five procedurally drawn moonscapes, managing fuel and speed to touch down safely on every pad before your ships run out.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A 15-year, $34,000 loan amortization table that prints monthly principal balance and interest breakdowns — all in BASIC with no floating-point library needed.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A four-line label printer utility that centers text automatically, switches printer pitch modes via direct port output, and bootstraps through machine code loaded from tape.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A full-featured 1986 income tax suite that computes federal 1040, Schedule A itemized deductions, Ohio state tax, and city tax using bracket interpolation across multiple filing statuses.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Enter a short string and watch it race across the screen paired with its own inverse-video mirror image in an ever-shifting bouncing pattern.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Intercept and decode tape header blocks in real time using a hand-coded machine language routine that reads the EAR port directly.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Place counters on a grid, force chain-reaction explosions, and outwit a score-evaluating computer opponent in this tense two-player strategy game.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A clever code-breaking game where the computer tries to crack your secret three-digit number, using an ingenious candidate-scoring system to narrow its guesses.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Pilot a lander through scrolling alien terrain, rescue stranded astronauts, and dock with a moving mothership before your ships run out.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Enter a year and up to ten special dates, then watch this BASIC calendar generator print a full 12-month grid with inverse-video highlights and optional hard copy output.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Calculate which day of the week any historical date fell on — this calendar program covers any month and year with full leap-year support.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Explore a 9×9 grid world, feed dogs, chop trees, unlock doors, and light a candle to power an island beacon in this text adventure with a verb-object parser.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A seven-option personal budget manager tracks named accounts month-by-month, displaying running balances, deficits, and annual totals with formatted dollar amounts.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Eight self-contained demos in one package — from spring-physics animation and UDG flag graphics to a software digital timer — all selectable from a single menu.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Enter up to 15 labeled values and watch this program scale and draw a horizontal bar chart complete with totals, averages, and a correction pass.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A nine-function personal finance suite covering compound interest, loan amortization, annuities, bond valuation, budget conversion, life insurance estimation, and a 300-year calendar — all from one menu.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A PLOT/DRAW illustration of the Convair B-58 Hustler supersonic bomber, built with arc-capable DRAW commands and followed by a full spec sheet.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A full-featured UDG character editor supporting joystick or keyboard control, pixel-by-pixel bit toggling, numeric byte entry, and tape save/load for all 21 user-defined graphics.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A strategic Nim game pitting you against an AI opponent that uses binary decomposition to calculate winning moves, with animated UDG android figures on a colorful board.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A color-coded monthly budget tracker managing 14 expense and 14 income entries, using penny-scaled integer arithmetic to sidestep floating-point errors.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A clever scan-line algorithm fills a circle using Pythagorean geometry, accepting custom ink color, center coordinates, and radius — all in under ten lines.
computer_media, orig pub: 08.31.26, updated: 08.31.26
Generate a modified character set stored in RAM, then switch between normal and alternate fonts on the fly with a single POKE command.
computer_media, orig pub: 08.31.26, updated: 08.31.26
A cassette label printer utility that centers up to four text lines, previews them on screen, then LPRINTs as many copies as you need.
computer_media, orig pub: 08.30.26, updated: 08.30.26
This self-modifying BASIC utility walks through program memory byte by byte, permanently flipping every letter between uppercase and lowercase on demand.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A machine code utility that hooks into the BASIC editor to provide configurable automatic line numbering, activated and deactivated via USR calls.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A seven-function machine code toolkit lets you browse, load, relocate, and convert memory contents, topped off with a self-modifying BASIC line renumberer.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Design custom pixel characters interactively on an 8×8 grid, with real-time preview and direct memory writes using POKE and USR.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A joystick-driven pixel drawing tool with freehand sketching, circle placement, tangent-circle geometry, and XOR-mode erase—all controlled from a single main loop.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A clever two-decimal-place formatter that right-aligns numbers across screen columns using DEF FN rounding and string-padding tricks.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A hypnotic random walk paints colored blocks across the screen, drifting through nine paper colors with every unpredictable step.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A color-coded Mastermind clone that challenges you to crack a secret 4-digit code in 10 tries, with satisfying audio and visual feedback for every guess.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Convert integers between any two number bases using this three-input utility that routes conversions through base 10 as an intermediate step.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Flip every screen character upside-down, swap in a custom lowercase font, or redirect the system to RAM — all from one multi-entry BASIC utility.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A machine code multitasker grafts ten new BASIC commands—including AFTER, EVERY, ON ERROR GOTO, and ON BREAK GOSUB—onto the interpreter using an IM 2 interrupt vector and a replacement statement loop.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A two-channel PSG rendition of a Beatles classic plays with randomized tempo, chained error recovery, and a seamless load of the next music piece.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A 14-piece music player lets you choose any composition, then adjust tempo and transposition by semitone before or after playback.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Eight folk and popular songs play through the BEEP command, with chord-name overlays, adjustable tempo, and continuous-loop playback all built into one compact music player.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A three-channel music player with selectable compositions, adjustable tempo, and looping modes — all driven by carefully encoded DATA statements.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A multi-voice music player stores complete compositions as DATA statements, blending three-channel synthesis with melody and adjustable tempo control.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A full-featured pixel art studio with eight drawing modes, joystick support, flood fill, scalable copy, arc drawing, and ink/paper color control — all in BASIC.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A color-by-number painting game where you reveal a hidden picture one color at a time by selecting digits that flood-fill matching screen regions.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A solitaire card game that renders fully pip-illustrated playing cards on screen and challenges you to clear the deck by matching pairs totaling eleven or J-Q-K runs.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Peek inside your own BASIC program's raw token stream, byte by byte, with this self-reading memory inspector that decodes addresses and character values live.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Peek behind the curtain of BASIC itself — this memory walker decodes your program's raw bytes, revealing line numbers, lengths, tokens, and hidden five-byte number constants.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A suite of eight mortgage and property financial calculators, from monthly payments to rental analysis, dispatched via a clever arithmetic GO SUB expression.
computer_media, orig pub: 08.30.26, updated: 08.30.26
This program reads any user-defined graphic character, transposes its 8×8 bit matrix, and POKEs the rotated result back into memory for instant display.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A color-and-sound memory challenge that grows its sequence one step at a time — can you repeat it back before your brain gives out?
computer_media, orig pub: 08.30.26, updated: 08.30.26
A pure-BASIC software clock that derives elapsed time by polling the system frame counter, with manual time-set and leading-zero display formatting.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Pinpoint every line and statement where a named variable appears by walking the tokenized BASIC program area in memory — a genuine debugging utility.
computer_media, orig pub: 08.30.26, updated: 08.30.26
Guide a randomly colored symbol anywhere on screen using joystick directional values, with boundary checking and a second button to randomize the character itself.
computer_media, orig pub: 08.30.26, updated: 08.30.26
A compact looping tone built from a single SOUND statement hammering seven AY-3-8910 registers at once — hear what envelope shape 8 actually sounds like.
computer_media, orig pub: 01.30.26, updated: 08.30.26
Type any message and watch this banner printer translate each letter into tall, blocky dot-matrix characters — one column of bits at a time.
computer_media, orig pub: 07.20.24, updated: 08.30.26
Enter your birthday and a target month to watch three sinusoidal biorhythm curves — Physical, Sensitivity, and Intellectual — plotted live across the screen.
computer_media, orig pub: 07.14.24, updated: 08.30.26
Joystick-driven pixel graphics editor with line, circle, fill, and Bezier curve tools.
computer_media, orig pub: 05.13.24, updated: 08.29.26
A complete pixel-art drawing program with ten drawing modes, joystick support, flood fill, scalable copy, and attribute-level color control packed into one BASIC listing.
computer_media, orig pub: 06.16.24, updated: 08.29.26
Interactively explore all 14 registers of a programmable sound chip with a full-screen editor, live waveform display, and real-time audio output.
computer_media, orig pub: 06.10.24, updated: 08.29.26
A rendition of a woman in black and white (no color attributes used). Not a typo: contains a SCREEN$ file that is definitely not the Mona Lisa.
computer_media, orig pub: 06.16.24, updated: 08.28.26
A full-screen text editor with search-and-replace, justified output, printer support, custom typefaces, and 21 user-defined graphics — all in pure BASIC.
computer_media, orig pub: 06.02.24, updated: 08.28.26
Discover how a single POKE into one system variable transforms the appearance of the input cursor through seven distinct visual styles.
computer_media, orig pub: 06.02.24, updated: 08.28.26
Enter your weekly recording schedule day by day and print a neatly formatted timetable complete with channel numbers and program names.
computer_media, orig pub: 06.02.24, updated: 08.28.26
A hands-on hex loader that lets you POKE machine code directly into memory, with per-line checksum verification to catch any mistyped bytes.
computer_media, orig pub: 06.02.24, updated: 08.28.26
A geometric interference pattern builder that saves its own screen to tape with a user-chosen pause value baked right into the filename.
computer_media, orig pub: 06.02.24, updated: 08.28.26
Programs and code samples from ZXzine issue 12.
computer_media, orig pub: 07.11.25, updated: 08.28.26
A fully functional modem-driven bulletin board system with message storage, multi-mode reading, sysop chat, and embedded machine code serial I/O — all in BASIC.
computer_media, orig pub: 06.14.25, updated: 08.28.26
A menu-driven screen capture utility that uses a POKEd Z80 LDIR routine to save and restore full or partial display regions to a RAM buffer.
computer_media, orig pub: 06.14.25, updated: 08.28.26
A flashing Christmas card draws a PLOT/DRAW tree, scatters UDG baubles, then loops through three carol melodies with randomised ornament colours each time.
computer_media, orig pub: 08.04.24, updated: 08.28.26
Watch a triangle smoothly morph into a square across 20 interpolated frames, driven by a machine code dual-screen buffer that eliminates flicker entirely.
computer_media, orig pub: 08.04.24, updated: 08.28.26
A machine code–assisted tool that intercepts and decodes tape header blocks, revealing file type, filename, length, and start address for any loaded tape.
computer_media, orig pub: 08.04.24, updated: 08.28.26
A dual-year tax planning tool compares your 1982 and 1983 US federal income tax side by side, walking through income, deductions, exemptions, and bracket lookups.
computer_media, orig pub: 07.14.24, updated: 08.28.26
Draw freehand curves in 3D space with six-direction keyboard control, then replay or randomize your sketches with a perspective projection engine built entirely in BASIC.
computer_media, orig pub: 07.14.24, updated: 08.28.26
A customizable quiz game that randomizes question order, scores two attempts per question, and gives letter-hint clues before revealing the answer.
computer_media, orig pub: 07.06.24, updated: 08.28.26
A random poetry generator that picks words from fifteen thematic lists and assembles them into moody, surreal four-line verses — generating a fresh poem every few seconds.
computer_media, orig pub: 07.06.24, updated: 08.28.26
See what happens when two characters share the same screen cell — this interactive tool visually demonstrates XOR overlay printing with instant labeled results.
computer_media, orig pub: 07.06.24, updated: 08.28.26
A six-stock technical analysis suite that tracks price and volume across 30 weeks, plots moving averages, and scores trend momentum to flash BUY or SELL signals.
computer_media, orig pub: 08.13.23, updated: 08.28.26
A 50-question geography quiz on U.S. states and capitals that draws map location markers and tracks first-try, second-try, and incorrect answers separately.
computer_media, orig pub: 08.13.23, updated: 08.28.26
A 50-question geography quiz on U.S. states and capitals that draws map location markers and tracks first-try, second-try, and incorrect answers separately.
computer_media, orig pub: 08.13.23, updated: 08.28.26
A two-mode financial calculator that models rent-versus-buy decisions and investment property returns, complete with after-tax cash flows, IRR computation, and a plotted appreciation-rate chart.
computer_media, orig pub: 08.13.23, updated: 08.28.26
A five-mode mortgage amortization tool that pre-calculates every monthly payment into a lookup array and offers reports from single-payment detail to a graphical interest/principal plot.
computer_media, orig pub: 08.13.23, updated: 08.28.26
A grammar drill suite covering verb agreement, pronoun usage, homonyms, and more, with timed tests, per-category scoring, and custom UDG logo graphics.
computer_media, orig pub: 08.13.23, updated: 08.28.26
Features a graphical board with animated dice and doubling cube, four AI difficulty levels, machine code move selection.
computer_media, orig pub: 08.13.23, updated: 08.28.26
A fully featured backgammon game with a four-level AI opponent, doubling cube, gammon scoring, and animated dice — all driven by embedded machine code routines.
computer_media, orig pub: 08.06.23, updated: 08.28.26
Take the controls in this machine-code-powered combat flight game, featuring block-graphic visuals, printer score output, and a best-score-of-the-day display.
computer_media, orig pub: 08.05.23, updated: 08.28.26
Draw a picture tile-by-tile using cursor keys or joystick, then watch it compress into nine reusable user-defined graphic characters automatically.
computer_media, orig pub: 07.11.23, updated: 08.28.26
While on reconnaissance in space, your ship has been drawn by a graviton beam towards an alien cruiser.
computer_media, orig pub: 06.25.23, updated: 08.28.26
You are in South America in the jungle, near an as-yet-undisturbed Inca temple. Inside this temple you will find lots of treasure, your aim is to get out with as much treasure as you can.
computer_media, orig pub: 06.25.23, updated: 08.28.26
A complete double-entry bookkeeping suite with journal entry, ledger detail, income statement, and balance sheet modules — all driven by machine code sorting and optional numeric keypad input.
computer_media, orig pub: 06.25.23, updated: 08.28.26
A fractal terrain generator builds a randomized 3D landscape through iterative midpoint displacement, then renders it as a projected wireframe with sea-level clipping.
computer_media, orig pub: 06.25.23, updated: 08.28.26
Pilot a crosshair cursor across a defended landscape and blast alien saucers before they land ten times and build a city on Earth.
computer_media, orig pub: 06.23.23, updated: 08.28.26
Navigate alien rooms against a ticking countdown, collect scattered letters, and crack a secret five-letter code before your shuttle departs forever.
computer_media, orig pub: 06.23.23, updated: 08.28.26
A fully interactive configuration utility patches a Centronics printer driver in machine code, letting you choose your printer model, interface, column width, and linefeed behavior before saving a custom binary to tape.
computer_media, orig pub: 06.18.23, updated: 08.28.26
A full-featured modem BBS program with machine code serial I/O, message base management, sysop chat, and a clever initialization trick that erases its own setup lines after booting.
computer_media, orig pub: 06.18.23, updated: 08.28.26
A seventeen-game collection packed into one BASIC program, with a single-keypress menu that dispatches players to puzzles, strategy games, and word challenges.
computer_media, orig pub: 10.06.25, updated: 08.28.26