Downloadable Software for the ZX81, TS-1000 and TS-1500

1040 Form

13 Colonies

2K Games Pack

6 great graphically illustrated games on one cassette for the unexpanded TS1000.

3 Games

London Bridge, Asteroids and Sketch Pad.

3-D Escape

3-D Fractals

Adapted to ZX81 from an article in Creative Computing.

3D Bar Graph

3D Monster Maze

5 Card Showdown Poker

64K Memory Test

64K Tape Test

Accounts Recievables

ACS-DEBUG

ACSEMBLER

Ad Profit

Addition

Address

Address File

Address Label

Advanced Budget Manager

Adventure 2 Phoenix Tower

Adventure A: Planet of Death

Adventure B: Inca Curse

Adventure C: Ship of Doom

Adventure D: Espionage Island

AID

Programmer’s toolkit. Includes REM creation, renumbering, and more.

Algebra 1 - Roots of Quadratic Equations

Algebra I

Alien Gunner

Alien Invasion

Alien Lure

AMS-81

A Timex/Sinclair computer port of W3IWI’s BASIC TRACK program for earth satellite tracking.

Another Dice Game

Antenna Comp

Anti-Aircraft Gunner

Appointment Calendar

Area - Geometry

Area and Volume Formulation

Area of Circle

Asteroid Field

Asteroids

Astronomy Conversions

ASZMIC ROM

Plug-in machine language assembler replacement ROM for Sinclair Basic.

Average

Baby Syntext

Backgammon

Backgammon and Dice

Ball

Bank Book

Bank Shot

Banner Writer

Prints letters at 32x normal size.

Banners

BASE

Program to covert numbers to Hex, Octal Decimal, and Binary.

Basic BASIC

Basketball

Bat Cage

Catch the egg and put the bat in the cage.

Battle Ship

Beethoven

Bi-Plot Demo

This is a demonstration of a WRX16 display option. The 8K hi-res display file is divided into two 4K chunks, which are displayed on alternate frames to give a neat overlay effect. The lower six lines are standard low-res.

Big Char Exam

Big Message

Biorhythm

Biorhythms and Day Of The Week

Birds Flying South

Birthday

Black Jack

Blackjack

Blackjack (1000)

Adapted from a similar game Fred Nachbaur had written earlier for the first TRS-80 Pocket Computer. This is a direct application of Greg Harder’s “SRAM Hi-Res Extended BASIC” (aka SHREB) that demonstrates just a few of the cool things you can do with this package. Runs in a standard 16K ZX81 or equivalent, plus 8K

Block Buster

Adapted from a Spectrum program, it is an interesting game in the “puzzle” genre.

Bomb Smasher

Side-scrolling Breakout like game.

Bomb-Catcher

Bookkeeper

Double-entry bookkeeping program. Requires 64K RAM.

Bounce

Bounce

Bowling

Bowling

Bowling Alley

Brain Terrain

Break Even Analysis

Breakout

Brick Buster

Brickbuster

Breakout game.

Broken Program 1

Appears to print random blocks.

Broken Program 2

Appears to accept user input and sketch with it.

Budgeter

Tracks actual vs. budgeted expenditures and computes the difference.

Bulletin

Bulletin

Bulletin

Bulletin

Bulletin

Bulletin

Bulletin

Bulletin

Business #4

Break-even analysis and job quote estimator.

CAL

Prints a calendar for any year.

Calculator

Calendar

“Year-at-a-Glance” calculates any given year, showing the whole year on a single screen. Press “M” to give the “month” legends, “D” for day-of-the-week. Move the cursor around the calendar to highlight any date, then press ENTER – you’re shown your appointments or other significant events for that date. Move the cursor to a non-date field,

Calendar

Perpetual calendar, for years between 1800 and 2400.

Calendar Maker

Car

Car Payment

Card Trick

Care Care V1000

Car maintenance record system.

Carpooler

CassFile2

One individual’s cassette containing a number of programs.

Catacombs

Catch the Alien

Cave

Caverns

Census

Chainsaw

Challenger 1

Characters

Chase

Check

Balance your checkbook.

Check Book

Checkbook Manager

Checkbook, Income Tax, Budget Organizer

Checkers

Checking

Lists (25 16K) (100 64K) deposits showing amount and date entered. Lists (80 16K) (500 64K) checks and displays check number, date and payee. 

Checksum

Chess

Circumference

City Bomb

City of Xon

Clerical Spell List D&D

Clive Invaders

Clock

Clock 2

Colditz Castle

Combined Track Tab (D&D)

Common-Emitter Transistor Amplifier

Design and analysis of common-emitter transistor amplifiers.

Composer

Compound Interest

Computacalc

Computer Coach

Computer Combat

Computer Tutor

Includes Alpha Tutor and Vowel Tutor.

Conversational German

Copies ROM into RAM

Cosmos Landing

You are in charge of Starship Astron and have just completed a mission in the outer limits of the galaxy. Having already landed your own craft safely you must land your radio controlled drones onto the constantly moving landing platform.

CP-ZX v2.2

ROM for the CP-ZX printer interface.

Crash

Crasher

Credit Rating Interest Rate

Cricket

Critical Path Analysis

Crossword

This is a quickload program. It is comprised of a short speed loader in normal ZX81/TS1000 format followed by the actual program in a format similar to the Spectrum and TS2068 tape format.

Cube Game

Curse of the Aztec Tomb

You are faced with the task of exploring a sacred mountain of the Aztecs, in which one of their great leaders is rumoured to be buried along with untold riches in ancient relics. The only clue you have is that you must seek out a key which closely resembles a dollar sign.

Cypher

D&D Character Generator

D&D Track

Data Finder/Strength of Materials

Tom Wood’s ZX Data Finder and Strength of Materials on one tape.

Data Storage and Display System

Database program.

Day of Week Calendar

Decimal Code Poker

Decision Maker 1

Decision Maker 2

Defender

Degree of Conversion

Delphic Toolkit

DemoPeek

Deposit Multiplier

Depreciation and Income Taxes

Design

Devon Demon

You must capture 4 of the 1000s pieces. It is O, and you are X. You capture by landing on top of the piece, and you move along the diagonals, backwards and forwards. To move, enter the letter and number of piece to move, and then, at the same time, the letter and number of

Dice

Dice

Dice Game

Digital Clock

Digital Clock

Digital Clock

DISA-Z Disassembler

DitherPaint81

Port of DITHERPAINT99 (for the TI99/4A with EXTENDED BASIC) that has been optimized for the Sinclair ZX81/Timex 1000 computers.

DO-CALC

Donkey Kong

Dragons

The classic fractal dragons program, written by Greg Harder. Runs in 16K, but 32K recommended for larger dragons.

Draughts

Draw

Drop Test

Druidical Spell List

Dues Tracker (64k)

Dungeon Generator

Dungeon of Ymir

High resolution, "Dungeons and Dragons" graphic adventure game, Rogue-like.

Earthquake

Economy Trio

Anypoint, day calculator, 12- and 24-hour clocks.

Edge

EE1 Filter Design

Effective Interest

Electric Cost Analyzer

Exam Score Sorting

Exercise and Calories

Extended Basic

Factorizing Numbers

Fast 3-D Landscapes

Menu-driven math visualizer.

Fastload

Fifteen Puzzle

File

Name and address program.

File Manager

Financial

Programs to amortize a loan, calculate the Rule of 78, compound interest and depreciation.

Financial Ratios

Fire Works Black on White

Fire Works White on Black

Flag

Flash

Entry for the SyncWare News display program contest.

Flight Simulator

Fontkit for WRX16

Various high-res fonts developed by Fred Nachbaur and Greg Harder, including San-serif Bold, Olden, Olden Bold, Machine Bold, Fancy, a general-purpose lower-case-only set, even a proportional character set that looks like the “Sinclair” logo.

Ford Falcon

Forecasting Graph

This is a quickload program. It is comprised of a short speed loader in normal ZX81/TS1000 format followed by the actual program in a format similar to the Spectrum and TS2068 tape format.

Fortress Of Zorlac

Four Arithmetic Tables

Fourier Analysis

Input the data points of any waveform (assumed repetitive) and it computes the Fourier transform. Or give it the transform (Fourier co-efficients) and it computes the wave. You can even do two independent waveforms, plotted X vs Y (such as Lissajous figures). Sample run contains such an X-Y plot in the shape of Mickey Mouse;

Fox at Dusk

Frenzy

Fun and Games Tape 1

Five games/programs for the TS1000:

Fundamentals Of Math

Fur Trader

Galactic Gunner

Galaxian

Galaxy Invaders

Games Sampler

Garbage Gobbler

Geiger Counter

General Ledger

Cassette from the ICS computer training series.

General Ledger

Geometry 1

GET_GMC

Machine language subroutine that can be used to get user input.

Gladiators

Gobble Man

You are chased around a maze by ghosts. If you can eat some magic food you have a chance of stopping the ghosts. This is a superb realization of this exciting game for the ZX81 and TS1000 computer. Written in machine code, with excellent graphics, there is also a personalized ‘high-score’. 16K.

Goblin

Grafit

Grafix

Gran Marquee

Graphics Archiver

Store/ retrieve WRX16 graphics screens. “Upload” transfers existing high-res screen into program for saving, “Download” transfers from loaded program into high-res display file for viewing.

Graphics Toolkit

Grimm's Fairy Trails

GTO

Guess It

Guitar For Beginners

Gulp

This is a quickload program. It is comprised of a short speedloader in normal ZX81/TS1000 format followed by the actual program in a format similar to the Spectrum and TS2068 tape format.

Gunner

Ham Radio Programs

Three programs of use to radio amateurs.

Hampsons Plane

Hangman

Heating System Analyzer

Hex Code Memory Loader

Hex Dec Bin

Hexas, Basic*Olay

Symbolic hex assembler written in BASIC. Generates relocatable code.

Hexload III

Basic program to load/edit machine code in hexadecimal.

Hi-Res Chess

The classic Psion Chess game, with actual chess pieces on an actual board! Fred stretched Wilf’s routine to give 26 display rows… 24 for the board, and 2 for the input lines, so you have to key your moves in blind… not too much of a handicap, if you’ve played the original. To exit, press

Hi-Res Word Processor

High Res Space Inv

High Resolution Graphics

Home Asset Manager

Home Improvement Planner

Home Improvement Planner

Home Mortgage

Mortgage analysis and pre-payment calculator.

Homework Problems

Calculates the convection coefficient for fluid flow through a circular pipe.

Horizontal Bar Graph

Horse Race

Hot Z II 16k v2.11

Hot Z II 64K v2.02

Hot Z v1.6

Hot Z v1.72

Hot Z on a John L. Oliger 2764×2 READ EPROM board.

HOT Z-II 48-64K

Hot Z-II on EPROM, mounted on a John L. Oliger 2764×2 READ EPROM card.

Hothouse Plot

HotZ-II

Z80 disassembler. Includes versions for 16K, 64K RAM.

Hourly Wages

Ice Cream Cone

Identify Above Average Sale

Illusionist Spell List

Inducto

Interest

Introduction to Chemistry

Introduction to Computers

Invader

Invaders

Fred Nachbaur’s Christmas present to his customers in 1987. This one’s claim to fame is that it used the SHREB package, but most of the program runs in machine-code, demonstrating that the SHREB package is a useful library of graphics routines as well as a BASIC extension. This program has a bug that’s so charming

Invaders

Invasion

Invasion Force

Inventory

Inventory Control

This is a quickload program. It is comprised of a short speed loader in normal ZX81/TS1000 format followed by the actual program in a format similar to the Spectrum and TS2068 tape format.

Inventory Control

Inverse Scroll

Investment Growth

Invoice

InvTax

IRA Planner

Island Kingdom

Jack Rabbit

Jackpot Payoff

Job Jar

Julia Sets

This is the Julia set equivalent to “Mandelbrot FFP”.

June 1983 Loader

KAPKIT 1000

Machine language utility. Routines included are REM line generator, delete lines, line address, line length, string address, copy (LDIR and LDDR), IN, OUT, change RAMTOP, and more.

Kartik

A word game for 2 to 8 players.

Kasino Kraps

Keno

Variation of Chinese lottery. Player picks 10 numbers from a set of 81, dealer picks 20. Player wins if he matches 5 or more of the 20.

Keyboard

Keyboard List

Keys to Gondrun

Killer Robots

Kingdom

Knights Move

Kwik Plot

L-Systems

L-Systems is a type of fractal using rules of generation to produce self-similar space-filling curves. This implementation by Greg Harder is true to the original specification, and it’s recommended that you look up the reference provided in the program. It uses a “QUIK” display mode, a hybrid between FAST and SLOW.

Labyrinth

This is a quickload program. It is comprised of a short speed loader in normal ZX81/TS1000 format followed by the actual program in a format similar to the Spectrum and TS2068 tape format.

Labyrinth 2

Land-Mine

Lander

Lander

“0” to fire rockets, “5” to move left, “8” to move right.

Language Usage

Laser 5

Laser Cannon

Lettertype

Life Expectancy

Line Renumber Routine

List Manager

Load Tracker

Loader

Loader

Loan Mortgage Amortizer

Loan Payment

Log Book

Logarithms

London Bridge

Lprint

Lunar Excursion Module

Machine Code Editor

Machine Code Loader/Editor

Macro-Life

Per Fred Nachbaur, “Greg Harder was a real master at adapting program listings in magazine into our High-Res BASIC environment. This Life simulation is an example. The zipfile contains both a 16K and a 32K version, the 32K version saves the screen in high memory for improved speed and more options.”

Mad Dog Tank Blaster

The enemy tank commander has gone mad. He is shooting wildly in all directions. You must destroy him before you run out of time, get shot, or run down.

Magic Users Spell Test

Mandalas

Mandelbrot-FPP

This is the classic Mandelbrot set fractal. The program is pretty much self-documenting, its claim to fame is the use of the ZX81’s calculator language directly, to give about a 3x speed increase over straight BASIC. However, it’s still pretty slow… be forewarned. MAND4-FP.P is a quadric Mandelbrot in medium-res dithered greyscale (needs 32K)

Manufacturing Control

March 1984 Loader

Marine Rescue

Marketing Performance

Markup Calculation

Marquis

Math

Math

Math Flasher: Addition

Math Flasher: Division

Math Flasher: Multiplication

Math Flasher: Subtraction

Math Helper

Math I

Multiple math routines. Side A Side B

Math II

Multiple math routines.

Math Program

Math Programs

Programs by a grade school teacher and one of his students.

Math Quiz

Math Raiders 1000

Math Test

Maze Dash

Mazogs

MCoder

Measurement Conversion

Media Money cost of ads

MemoText V3C-J

Customized version of MemoText. Runs from cassette, includes universal printer driver. Customized for the Exatron stringy floppy system.

Merry Christmas / Happy New Year

Merry Christmas Message

Merry Christmas Message

Merry Christmas Message

Message Center

Billboard, Horizontal Scroll, Verti-Scroll.

Metagraphics

Meteor Shower

Micro Mouse

Micro-Pro

Microworld

Mid Range Number

Mileage

Miles Per Gallon

Mind vs Machine

Mini Breakout

Mini Data Base

Mini-Invaders

Mini-Pro

Minicalc

Mintax // Incorporate

Mixed Game Bag 1

Mixed Game Bag 2

Mixed Game Bag III

Mole

Money Analyzer 1

Money Analyzer 2

Money Matters

Programs to calculate various formulas around money.

Monthly Planner

Moon Base

Moon Lander

Moonbase

By Tim Hartnell with revisions by Tony Willing.

Morse Code

Practice sending, composing and listening to Morse code.

Morse Code Translator

Load program, select speed, play morse code into EAR jack. Play Morse Code Example.wav for an example of expected input. Morse Code Example.wav works at 9 WPM.

Moving Average

MTERM

Terminal program supplied with TS 2050 modem.

Multiples

Multiplication Tables

Multiprogram Demo

Demo versions of program that appear on the Fun and Games tape.

Munch Out

Muncher II

Murgatroyds

Murgatroyds Revenge

Music Educator I

Music Maker

Mystery

Name and Address Program

Name Badge

Namtir Raiders

Nest Egg

Net Pay

Night Gunner

Night Gunner (1000)

Nightmare Park

Nim

NIM 2K

A two-player Nim game for the 2K TS1000. Demonstrates what’s possible in just 2K of RAM, using only standard Sinclair BASIC. Because it uses the characteristics of the compressed display file, if you want to run it in a 16K ZX81 or emulator, you first have to POKE 16389, 72 then NEW before loading.

Note Tester

NOVA 1000

November 1983 Loader

Number

Number Base Conversion

Number Juggle 1

Number Juggle 2

Number Master

Odell Lake

Paint Brush

Parallel 1000

Partial Pascal

Patterns

PayCalc

Payroll

Payroll

Payroll

Payroll

Payroll Message

PCLS 1000

PCLS 1000 is a handy tool for managing the display file. It allows the user clear all or any portion of the screen with either background, white or black, almost instantly.

Peeker

Peeker

Personal Finance Planner

Phasor

Photo Close-Ups

Photography

Pinball

Playboy Bunny

Plot

Pluri-Forth

Poker Game

Portfolio Analysis

Power Pack 1

Presidents

PrintScreen

Processor Test

Progmerge

Program Merge

Programers Toolkit

Programming Utilities

Hex to decimal conversion and 2 byte converter.

Programs for Real Applications

These are a collection of programs that came with the book, The Sinclair ZX81: Programming for Real Applications by Randle Hurley. Many of the programs are just sample routines for you to use in your own programs.

Psychic

Psychology Test

Pythagorean Triples

Quilter

Quiz Maker

Quote

Racer 2

RAM Runner

RAMPager

Machine language entry tool.

Random Bar Chart

Random Boxes

Machine language program that prints random sized boxes with random character fills.

Random Plot

Random Sentences

Random Squares

Reaction

Real Estate Investment Analysis

Real Estate Spreadsheet

Rear Gunner

Record Formatter

Regression

Matrix math operations.

Reject Analysis Program

Report Generator

Rip-Off

Rocket

Program for creating a directory of programs on a tape.

Roller Ball

ROM-81

Mystery 2K EPROM in a Cambridge Microelectronics ROM-81 unit.

Runway

Russian Roulette

Sale Calc

Sales Bar Chart

Sales Tax Calculation

Salesman Commission

Savings Plan

Savings Projection

SCALES

Schedi-Mort

Scrambled Words

Screen Invert

Screen Machine

Machine language sub-routine that allows inputs anywhere on screen, complete error checking, automatic formatting (dates, decimals), and advance directly to next prompt.

Screen Routines

Scroller

Scrolling Bulletin

Sea War

Seasons Greetings

Secret Message

Security Code

September 1983 Loader

Shark's Treasure

Takes place in deadly shark infested waters which guard fabulous riches hidden in the wreck of a sunken pirate ship.

Shoppers Friend

Side Scrolling Banner

Sinc-Artist v1.3

Sinclair Special Interest Group

Sine Wave

Skeletons

Sketch

Ski

Slalom

Slalom Course

Slot Machine

Slot Machine

Slot Machine

Slots

Smart Text V3

Word processor/database/interactive office utility program.

Smart Text V4

Word processor/database/interactive office utility program. It will work with the JLO video upgrade and an assortment of printer interfaces.

Snake Winder

Sniper

SNorth Games

NFLX Football, Miner's Revenge, Super Slide, and Storm Lander 3.

Space Background

Space Boy

Space Commando

In this challenging adventure game, the amalgamation of friendly planets has commissioned you to infiltrate Zircon 12, a space colony overtaken by Renegade Androids.

Space Crisis

Space Docking

Space Docking

Space Scape

Space Shuttle

Space Station

Space Trek

You are in command of the Starship Endeavor and the Galaxy, made up of 64 sectors, is being invaded by Drakons. Your mission is to seek them out and destroy them before time and fuel run out.

Speech Synthesizer

Machine language program that plays back pre-recorded words.

Spell

Spelling

Spelling Bee

Spinner

Spirograph

A cool graphics program adapted from a magazine article by Greg Harder. This one simulates the popular “Spirograph” toy, you define the sizes of the gears and the program does the rest. Includes yet another method of kinda- seeing the display while drawing in FAST mode

Split N Save Demo

Squash - Basic

Squash - MC

SRAM Hi-Res Extended BASIC

This is the full SHREB package, written by Fred Nachbaur and Greg Harder. Fred wrote the core routines (parser, tape routines, that sort of stuff) and Greg specialized in the cool graphics commands. Contains the latest version of the core only, plus a couple demos.

Stamp Collector

Star Blasters

Star Lander

Star Trek

Star Trek

Star Trek

Star Trek 3.5

Star Trip

Nail the aliens in outer space. Warp, photons, starbases, smart K-ons.

Statistical Measures

Statistics

Stock Market Game

Stock Market Simulation

Stock Market Tech Analysis 1

Stock Option Analyzer

Stock Plot

Plot stock performance.

Stock Projector

Stock Questionnaire

Store Demo

Strategy Football

Student Grade Average

Stumper

Sub-Niner

Subtraction

Super Invasion

Super Math

Super Monzxer

Super Screen

Window scroll routine for use in your own programs. Allows scrolling or clearing of whole or partial screen.

Super Scroll

Super Slot-O

Super Utility

Utility for working with machine language programs and memory.

Supermaze

SuperScan

Machine language routine for displaying/scrolling text within a subportion of the screen.

Surge

Surround

Survive

Swag

Swarm

Synchro-Sette April 1983

Cassette to accompany the April 1983 issue of Synchro-Sette.

Synchro-Sette April 1983 Menu

Synchro-Sette December 1982

Cassette to accompany the December 1982 issue of Synchro-Sette.

Synchro-Sette February 1983

Cassette to accompany the February 1983 issue of Synchro-Sette.

Synchro-Sette June 1983

Cassette to accompany the June 1983 issue of Synchro-Sette.

Synchro-Sette March 1984

Cassette to accompany the March 1984 issue of Synchro-Sette.

Synchro-Sette November 1983

Cassette to accompany the November 1983 issue of Synchro-Sette.

Synchro-Sette October 1982

Cassette to accompany the October 1982 issue of Synchro-Sette.

Synchro-Sette September 1983

Cassette to accompany the September 1983 issue of Synchro-Sette.

Synchro-Smash

Syncsum

Tai

Tape File

TapeDup

Mystery EPROM.

Tapestry

Target Practice

Tarot

Tax

Temp Conversion Problem 1

Temp Conversion Problem 2

Temperature Conversion

Temperature Conversion

Text Tiles

TextWriter 1000

Word processor. Capabilities include insert/delete, text compression/realignment and buffer memory for saving portions of text to use elsewhere.

The Bird Processor

Word processor.

The Coupon Manager

The Fast One

The Gambler

The Organizer

The Puzzler

The Starter

The Trident

Things To Do

Thwart

TI Video Software

Programs for use with the John Oliger TMS9918 video board for the Timex Sinclair 1000.

Tic Tac Toe

Ticket Drawer

Tilez

Tilt Board

Time / Distance

Time Bomb

Timeblasters

Timex Sinclair Public Domain Library Tape 1001

Assembled by Tim Ward from many sources. Contains programs 10001 – 10050.

Timex Sinclair Public Domain Library Tape 1002

Assembled by Tim Ward from many sources. Contains programs 10051 – 10121.

Timex Sinclair Public Domain Library Tape 1003

Assembled by Tim Ward from many sources. Contains programs 10122 – 10175.

Timex Sinclair Public Domain Library Tape 1004

Assembled by Tim Ward from many sources. Contains programs 10176 – 10210.

Timex Sinclair Public Domain Library Tape 1005

Assembled by Tim Ward from many sources. Contains programs 10211 – 10251.

Timex Sinclair Public Domain Library Tape 1006

Assembled by Tim Ward from many sources. Contains programs 10252 – 10293.

Timex Sinclair Public Domain Library Tape 1007

Assembled by Tim Ward from many sources. Contains programs 10294-10335.

TMS 9918A Video Upgrade ROM

ROM for the TMS 9918A Video Upgrade. Second “printer” ROM also on board.

TMS9918A Video Enhanced Basic EPROM Programmer

Tollbooth

Torpedo

Tournament

Towers

Towers of Hanoi

Tracker

Trap

Trap

Treasure Chase

Treasure Hunt

Treasure Hunt

Trigonometry

Truck

Game to demonstrated Frits Beniest’s extended basic for the ZX81.

TSUG Demo

TSUG Demo

TSUG Ft Worth

TSUG Print

Type DXCC

Two programs: one a simple text editor, the other for tracking countries a ham has contacted towards a DXCC goal.

Unit Price

Unknown Game

Unknown Game

Unknown Machine Code Routine 1

Unknown Machine Code Routine 2

Unknown Machine Code Routine 3

Unknown Machine Code Routine 4

Unknown Program

UTY

Program to calculate the day of the week given the current date, number of days between a date, and convert number to text.

Variable Budget

VDAQ1-HR

Votem Data Acquisition – Hi-res. Written for the Votem, a simple voltage-to-frequency converter designed for single-channel analog data acquisition using the ZX81. Fred’s implementation allows multi-screen acquisition, variable scale and timebase. 

Vocabuilder 1000

Voice

Program to accompany Brad Bennett’s speech recognition article published in Sync magazine.

Volumes: Geometry

Voyage of Peril

Adapted by Greg Harder from a ZX81 program in a British magazine. It’s a cool little adventure game, that nicely shows off his SHREB sprites, among other things. Requires 32K of RAM, but no need to poke RAMTOP higher; it only uses high memory for data storage.

VU-Calc

VU-File

VU-File Patch

VU-Write

Easily create documents like letters, document spreadsheets and other programs with full insert, delete, move, and print text.

WA-TOR

Based on a Computer Recreations piece in Scientific American. It’s a predator vs. prey simulator, kind of like “Life”: you have to populate a planet with fish and sharks. The idea is to keep both species alive on a long-term basis. This uses Nissim Elmaleh’s “SHR” for the cover screen and graphing routines.

Wall Street

You are a savvy Wall Street investor speculating in stocks, real estate, precious metals, minerals, and the money markets. 

WAS/QSL

Programs for ham radio.

Weather Analysis

Weather Forecast

White Hole

Wind Chill

Wink

Word

Word Processor

Word Sinc II.3

Word Wizard

Wordfix

Text editor.

Wordy

World Geography

Quiz on geography.

Yachtzee

Ymir Dungeon Designer

Level designer for Dungeon of Ymir.

Z-AID

Utility program that adds verify, chain, and block memory save/load.

Z-XLR8

Zap

ZCALC

ZComm

Terminal software for the ZX81/TS1000 for use with the Byte-Back MD2 modem.

Zeal Disassembler

Zebra Joystick Games

Invaders/Road Race, H-Fighter/Squish, Painter/Cobra.

Zebra Light Pen

Zed Text

Zombies

Zombies/Sword of Peace

ZX Bug

ZX Chart

Draws data charts.

ZX Chess I

ZX Compiler

EPROM with ZX Compiler and Hot Z.

ZX File Finder

Early database program.

ZX Forth

EPROM with ZX Forth.

ZX Jackpot (Slot-Machine)

ZX Linotype

Feature rich text editor.

ZX Profile

ZX Profile and Quickload

Thomas Wood’s ZX Profile and ROMPACK’s Quickload.

ZX Scramble

ZX ToolBox

Three utility programs. Directory displays names of programs on a tape. Record allows SAVEing data and READing it back into the program later; can be incorporated into your own Basic programs.

ZX Typer

ZX-Assembler

ZX-Chess II

ZX-FORTH

ZX-Galaxians

ZX-PAINT

ZX*TERM*80

SCRAM Board required – 8K in 8->16 K region. Support for Westridge and Byteback Modems. Support for TASMAN TYPE B OR C, AERCO OR OLIGER 2068, OLIGER 1000 (MAPPED FFFF), MEMOTECH CENTRONICS, MEMOTECH RS232, ENER-Z REPORT GENERATOR, EPROM SERVICES C.P.,BYTE-BACK C.P. printer interfaces. 16K Program.

ZX81 Assembler and Disassember

ZX81 Home Computer Package

Billboard, etch-a-screen, composer and checkbook balancer.

ZX81 Quiz Builder

ZX81 Scroll

ZXAD MCoder Stopper

Assembler debugger (ZXAD), program to load disable autorun in programs, MCoder compiler.

ZXAS

ZXDB

ZXLR8

Cassette storage system that SAVES/LOADS 6-10x faster than normal, with error checking. 

ZXMAN