ISTUG Public Domain Library 6

Date: 198x
Type: Cassette
Platform(s): TS 2068

A library tape from the Indiana Sinclair Timex User’s Group with a broad mix of games, financial tools, animation utilities, and creative programs.

Content

Bouncing Text

Program

Type any short phrase and watch it bounce across the screen paired with its inverse-video twin in an endless, scrolling light show.

Call the Plumber

Program

Guide your bucket across the screen to catch 30 falling drips in this real-time arcade game that uses custom-defined UDG sprites for every on-screen character.

Cassette Label Maker

Program

A tape label maker that centers text, supports decorative cut-out titles, drives printer escape codes directly, and manages a companion machine code block via tape.

Composition Editor

Program

A three-voice composition editor lets you enter, edit, and play back music note-by-note, storing pitch data as raw sound-chip register values in string arrays.

Income Tax 1

Program

Walk through every line of a 1986 Form 1040 with this interactive BASIC program that calculates your tax liability and prints a fully formatted return summary.

Inctax789

Program

A three-year income tax estimator covering 1987–1989 that handles all four filing statuses, Social Security taxation, IRA deductions, and itemized versus standard deductions.

Invert

Program

Redirect the font pointer to a RAM copy of the character set, unlocking fully editable custom character shapes across all 96 printable characters.

Investment

Program

A nine-module personal finance toolkit covering loans, annuities, bonds, life insurance estimates, a calendar, and a utility bill analyzer — all with optional printer output.

Investment/Loan

Program

A full-featured financial calculator solving investments, loans, and cash flows — enter "X" for any unknown and let the program find it automatically.

Jack5

Program

A two-entity grid game with UDG sprites, SCREEN$-based collision detection, and a high-score name entry system packed into tight BASIC code.

Joystick

Program

A joystick-driven drawing toy that trails randomly colored symbols across the screen, with a fire button that switches the brush character on the fly.

Jumper

Program

Dodge two independently scrolling obstacle rows using five custom sprites and a lives system — all packed into a tight BASIC movement and collision loop.

Keyword v5

Program

A machine code keyboard utility that lets you type BASIC keywords as plain text gets a slick animated loader with tape and disk backup support.

King-Kong

Program

Navigate a multi-story building, dodge patrolling gorillas, and defeat the giant ape in this attribute-collision arcade game with a custom character set and frame-counter timer.

L & K

Program

Load multiple full screens into memory and play them back as a slideshow, driven by a compact Z80 machine code routine installed at runtime.

Large Characters

Program

Watch every printable character from the ROM font rendered as a giant 8×8 pixel grid, one at a time, with clever bit-extraction arithmetic.

Laurie

Program

Draw joystick-controlled pixel art frame by frame, saving each one as raw memory code — this animation tool even embeds its own machine code bootstrap.

Lemonade Stand

Program

Manage a week-long lemonade stand, balancing weather, pricing, and random vandal attacks in this economics simulation with animated block-graphic shopfront.

Life

Program

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.

Lissajous

Program

Watch continuously morphing Lissajous curves drawn in real time using parametric sine and cosine equations with an ever-shifting frequency ratio.

Lunar Land

Program

Guide a crippled survival capsule to a safe lunar touchdown while your engines randomly deteriorate — every second counts in this physics-based lander game.

Magazine File

Program

A menu-driven magazine article database packs up to 500 records into a string array, with subject search, bubble sort printing, and a character-by-character record editor.

Magic Square

Program

Enter a starting number and a step value to instantly generate and print an arithmetic magic square where every row, column, and diagonal shares the same sum.

Magnabanner

Program

Print giant magnified banner text in four typographic styles using pixel-level font reading, machine code type rendering, and user-selectable fill characters.

Magnify

Program

Type two lines of text and watch each character balloon into a bold block-graphic display — with printer output — using a clever pixel-reading trick.

Magnify12

Program

Blow up any text to giant banner size by pixel-sampling each character and reprinting it with your choice of block-graphic fill characters — on screen and printer simultaneously.

Make UDGs

Program

Design custom graphic characters pixel by pixel on an 8×8 grid, then compile, save, load, and edit them with this interactive UDG generator tool.

Manager

Program

Run a radio factory through weekly crises — union strikes, flood damage, and supplier hikes — balancing wages, workforce, and pricing to avoid bankruptcy.

Manimation

Program

A walking stick-figure animation that pushes the UDG system to 80 characters by swapping multiple graphics tables on the fly using direct memory POKEs.

Moon Lander

Program

Guide your lunar lander across five hand-crafted moonscapes, juggling thrust, rotation, and fuel while dodging meteors and sticking every landing pad.

New CHR$

Program

Flip your entire character set upside-down, load hand-crafted letter shapes, or restore the ROM font — all by jumping to a single line number.

Programming Tools

Program

Four machine code utilities — auto line numbering, a step tracer, a custom function key, and user-defined keys — packed into a single BASIC loader using IM2 interrupts.

Towering Inferno

Program

Guide a rescue boat across the screen to catch people leaping from a burning building in this action game with UDG sprites and a detailed block-graphic backdrop.

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

Tags

Archived Media Downloadable Indiana Sinclair Timex User Group TS 2068 Collection