Timex Sinclair Public Domain Library Tape 1003

Developer(s): Tim Ward
Date: 198x
Type: Cassette
Platform(s): TS 1000

Tape 1003 of the Timex Sinclair Public Domain Library. Assembled by Tim Ward from many sources. Contains programs 10122–10175: 29 on side A and 25 on side B. The tape mixes business and finance calculators with games such as Kingdom, Odell Lake, Clive Invaders and Treasure Hunt, educational quizzes, clocks and display demos.

Programs on the Tape

Side A

  • 10122 Investment Growth: compound annual growth rate of an investment (also #57178)
  • 10123 Identify Above Average Sale: flags sales above the average of ten (also #57233)
  • 10124 Sales Tax Calculation: sales tax and total for a purchase (also #57234)
  • 10125 Address Label: prints address labels for up to 100 entries (also #57235)
  • 10126 Payroll: gross pay with overtime (also #57236)
  • 10127 Payroll Message: gross pay from hours and rate, with a message (also #57237)
  • 10128 PayCalc: gross pay from hours and rate (also #57238)
  • 10129 Sale Calc: total of a sale from price and quantity (also #57239)
  • 10130 Text Tiles: endless scrolling textile-like patterns (also #57240)
  • 10131 13 Colonies: the 13 colonies in order of ratification, with an animated flag (also #57241)
  • 10132 Laser Cannon: shoot targets crossing the screen from a cannon on the left edge (also #57242)
  • 10133 Knights Move: knight’s tour puzzle on an 8 × 8 board (also #57243)
  • 10134 Name Badge: shows your name in an animated border (also #57244)
  • 10135 Surround: two-player trail game: force the other player to crash (also #57245)
  • 10136 Alien Lure: lure and trap alien ships on a small grid (also #57246)
  • 10137 Note Tester: treble clef note-reading quiz (also #57247)
  • 10138 Hampsons Plane: board game on a 26 × 20 grid (also #57248)
  • 10139 Screen Invert: inverts the characters of the BASIC listing in memory (also #57249)
  • 10140 Horizontal Bar Graph: horizontal bar graph by year (also #57250)
  • 10141 Flag: draws a flag in block graphics (also #57251)
  • 10142 Split N Save Demo: demonstrates a split screen with fixed lines at the bottom (also #57252)
  • 10143 Nest Egg: retirement savings growth and withdrawal planner (also #57253)
  • 10144 Psychic: letter-guessing psychic trick (also #57254)
  • 10145 Number: builds a 4 × 4 magic square for any total (also #57257)
  • 10146 Computer Combat: tank shooting game along the bottom row (also #57258)
  • 10147 Treasure Hunt: hunt for gold in caves while avoiding demons (also #57259)
  • 10148 Stock Market Simulation: trade shares in five companies from $10,000 (also #57260)
  • 10149 Kingdom: govern a village for five years, balancing people, money and corn (also #57261)
  • 10150 Invoice: prints invoices (also #57262)

Side B

  • 10151 Exercise and Calories: calories burned by exercise and the weight lost (also #57263)
  • 10152 Slot Machine: slot machine with block-graphic reels (also #57264)
  • 10153 Marquis: scrolls a line of text up the screen (also #57265)
  • 10154 ZX81 Scroll: block-graphic ZX81 banner screen (also #57266)
  • 10155 Munch Out: a character eats the text you type (also #57267)
  • 10156 Catch the Alien: catch an alien before the timer runs out (also #57268)
  • 10157 Clive Invaders: single-invader Space Invaders game (also #57269)
  • 10158 Spell: spelling test from a list of ten words you enter (also #57270)
  • 10159 Odell Lake: play a fish in Odell Lake and survive predators (also #57271)
  • 10160 Record Formatter: record formatter (also #57272)
  • 10161 Tracker: formats athlete records from tape for printing (also #57273)
  • 10162 Interest: compound interest with monthly deposits (also #57274)
  • 10163 Sine Wave: plots a sine wave (also #57275)
  • 10164 Mole: whack-a-mole (also #57276)
  • 10165 Swag: catch falling bags of treasure (also #57277)
  • 10166 Digital Clock: digital clock started from an entered time (also #57278)
  • 10167 Sniper: press the right key before the target vanishes (also #57279)
  • 10168 Check Book: checkbook reconciliation (also #57280)
  • 10169 Biorhythm: 30-day biorhythm chart (also #57281)
  • 10170 Math: arithmetic quiz at three levels (also #57282)
  • 10171 Spelling: spelling quiz (also #57283)
  • 10172 Temperature Conversion: Fahrenheit, Celsius and Kelvin conversion (also #57284)
  • 10173 Keyboard: keyboard reaction trainer (also #57285)
  • 10174 Characters: prints every character code (also #57286)
  • 10175 Clock 2: analogue clock with a moving seconds hand (also #57287)

The download has a TZX file, a plain-text listing (.b81) and screenshots for each program, in tape order by side, with the tape’s contents list (TS PDL 1003.txt) and photos of the cassette and its label. Program names follow that list; where it says “Unknown”, the name of the program’s own page is used.

Content

13 Colonies

Program

A patriotic animation cycles through all 13 original colonies with shooting-star effects, then renders a hand-crafted block-graphic colonial flag — all in BASIC.

Address Label

Program

A mailing label data-entry program that stores up to 100 address records in a 2D string array and sends them straight to the printer — with a name-length validator built in.

Alien Lure

Program

A cunning grid-based alien-trapping game where probabilistic enemy AI and a dual-mode gun make every move a calculated risk — can you top the high score?

Biorhythm

Program

A biorhythm analyser that plots your Physical, Emotional, and Intellectual cycles over a custom date range — with some fascinating bugs lurking in the cycle math.

Catch the Alien

Program

Race against a countdown to catch a randomly placed alien by steering your cursor with four keys — score higher by catching it faster.

Characters

Program

A compact loop walks every character code from 0 to 255, printing each glyph in sequence — a handy one-glance reference to the full built-in character set.

Check Book

Program

A BASIC checkbook balancer lets you enter deposits and outstanding checks, then reconciles your statement balance — with a paginated check-listing view.

Clive Invaders

Program

A one-alien Space Invaders clone where block-graphic sprites, laser fire, and score tracking come together in a surprisingly complete BASIC shoot-'em-up.

Clock 2

Program

A one-pixel seconds hand sweeps a trigonometrically drawn clock face, using PLOT, UNPLOT, and a timed PAUSE to animate 1000 seconds of ticking.

Computer Combat

Program

A tense one-dimensional tank battle where you manoeuvre, aim, and fire before your 25 rounds run out — and the enemy shoots back.

Digital Clock

Program

A hand-crafted digital clock that ticks in real time, lets you nudge its speed with keypresses, and automatically flips AM to PM at noon.

Exercise and Calories

Program

Enter your exercise activities and hours, and this BASIC program calculates calories burned plus estimated weight loss in both kilograms and pounds.

Flag

Program

A three-phase flag-drawing routine combines striped block graphics, a solid canton overlay, and UNPLOT pixel clearing to render a decorative national-flag pattern.

Hampsons Plane

Program

A grid-based puzzle game that uses direct display-file PEEK/POKE to flip 3×3 neighbourhoods of characters — enter a coordinate and watch the board change.

Horizontal Bar Graph

Program

Plot year-by-year data as a horizontal bar chart, with this simple INPUT-driven graphing routine that uses PLOT loops to draw each bar.

Identify Above Average Sale

Program

Enter ten sales figures and this BASIC program instantly flags which ones beat the average — a neat two-pass array technique worth studying.

Interest

Program

A monthly savings calculator that compounds interest step by step, then breaks down total value, total invested, and net interest earned.

Investment Growth

Program

Enter a starting value, ending value, and number of years to instantly calculate compound annual growth rate — positive or negative — with a clean summary printout.

Invoice

Program

A full invoice generator that prompts for company details, itemised pricing, and sales tax, then sends neatly formatted totals straight to the printer.

Keyboard

Program

A ten-round typing reaction game flashes a random character on screen and waits for you to hit the matching key — how fast can you respond?

Kingdom

Cassette

Multi-player village management game: assign workers to the dyke, the cornfields and defense each season, plant and trade corn, and survive floods, starvation and thieves.

Knights Move

Program

Can you guide a chess knight to every square on the board exactly once? This BASIC puzzle challenges you to complete the classic Knight's Tour in 64 moves.

Laser Cannon

Program

Guide your cannon with three keys and blast 21 incoming targets before five slip past — but watch your fuel supply carefully.

Marquis

Program

Type any short message and watch it scroll endlessly up the screen in this simple but clever marquee program with auto-centering and repeat control.

Math

Program

A ten-question arithmetic quiz lets you choose your operation and difficulty level, then uses a clever string-eval trick to mark your answers automatically.

Mole

Program

Move your crosshair with N and M keys, then strike when the mole surfaces — this BASIC game uses a clever display-file PEEK to detect a hit.

Munch Out

Program

Type any message and watch it get "munched" away character by character in this quirky two-character sweeping animation with built-in centring logic.

Name Badge

Program

Type your name and watch it appear inside an animated block-graphics border that fills outward from centre in a randomly chosen pattern — forever.

Nest Egg

Program

A retirement nest-egg planner that models capital growth, variable interest rates, new injections, and stepped monthly withdrawals — year by year until the money runs out.

Note Tester

Program

Can you name the note on the staff? This BASIC music quiz draws a treble clef, places a random note, and checks your answer by comparing ASCII character codes.

Number

Program

Enter any number and watch this program instantly build a 4×4 magic square where every row, column, and diagonal sums to your chosen value.

Odell Lake

Program

Step into the scales of a lake fish and survive predators, anglers, and starvation in this ecology role-playing simulation with branching outcomes.

PayCalc

Program

A straightforward pay calculator prompts for hours and rate, then displays a formatted wage summary — hiding a few curious structural details worth a closer look.

Payroll

Program

A simple payroll calculator that applies hourly and time-and-a-half overtime rates, looping until a negative sentinel value signals the end of input.

Payroll Message

Program

A straightforward payroll calculator prompts for hours worked and hourly rate, then displays a formatted pay message — simple BASIC arithmetic with a tidy output twist.

Psychic

Program

A self-working "psychic" letter-guessing trick unfolds across three rounds of column selections — discover the elegant grid mathematics that make it infallible.

Record Formatter

Program

A full-featured 64-field database manager with custom machine-code tape I/O routines lets you define, enter, edit, display, and print structured records entirely from BASIC.

Sale Calc

Program

A compact sales calculator that collects product name, price, and units sold, then totals them up with a curious fixed-rate surcharge that doesn't quite scale as expected.

Sales Tax Calculation

Program

A compact sales tax calculator with a 5.25% fixed rate loops for multiple transactions and displays itemised cost, tax, and total for each sale.

Screen Invert

Program

A self-modifying BASIC trick walks raw program memory and flips every character to inverse video — revealing how tokens are stored byte-by-byte in RAM.

Sine Wave

Program

A compact sine curve plotter that precomputes 64 sample points and pauses for a keypress — revealing a neat busy-wait input technique worth studying.

Slot Machine

Program

A one-armed bandit built from block graphics and clever arithmetic constants — spin the reels and gamble between $1 and $5 per pull.

Sniper

Program

A quick-fire reaction game where a target figure flashes on screen and you must hit the right key before time runs out — and it only gets faster.

Spell

Program

A memory-based spelling quiz that flashes each word on screen, clears it, then challenges you to type it correctly — with a flashy celebration for a perfect ten.

Spelling

Program

A memory-based spelling quiz challenges players to recall and type 100 themed words correctly, tracking scores across rounds of ten — can you go ten for ten?

Split N Save Demo

Program

A clever display-file hack freezes a user-defined number of screen lines in place while the rest of the display scrolls freely beneath them.

Stock Market Simulation

Program

Trade five fictional stocks across multiple days, manage a portfolio with brokerage fees, and watch for surprise dividends and stock splits in this BASIC market simulation.

Surround

Program

A two-player snake duel where raw keyboard port reads and direct screen memory collision detection keep the action tight — first to 15 wins.

Swag

Program

Catch falling bags of swag with a moveable basket in this score-chasing arcade game, complete with random values and a persistent high-score tracker.

Temperature Conversion

Program

A neat temperature converter that handles Fahrenheit, Celsius, and Kelvin with input validation and a clean display loop — all in under 20 lines of BASIC.

Text Tiles

Program

An infinite stream of randomly generated textile-like patterns floods the screen, mixing normal and inverse characters for a mesmerising woven effect.

Tracker

Program

A tape-based record tracker that uses embedded machine code to load fixed-length data, then sorts and prints formatted multi-column event histories on a printer.

Treasure Hunt

Program

Navigate a network of caves, fire arrows at pursuing monsters, and haul your treasure to safety in this compact action-adventure with encoded room maps.

ZX81 Scroll

Program

A looping block-graphics banner display scrolls off screen and redraws itself continuously, using nothing but PRINT and SCROLL for a hypnotic animated effect.

Image Gallery

Note: Type-in program listings on this website use ZMAKEBAS notation for graphics characters.

Tags

Downloadable TS 1000 Collection

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