| 256K Ram! | Aerco offers a 256K RAM upgrade either configured as a RAMdisk or port mapped in 64K banks shadowing the cartridge bank. | Timex/Sinclair 2068 |
| 8K Machine Code Keyboard Scanning | Bernard Puerzer’s program for scanning the ZX80 keyboard (Machine Code Keyboard Scanning Program) was written for the 4K ROM, His program served as the occasion to give the same ability to read the keyboard to 8K ROM users. This required adaptation since the programs are not automatically transferable. One of the problems was to get | Sinclair ZX80, Sinclair ZX81, Type-in program |
| 8K Updates | Forest Treasure; Defuse; Mastermind; Hangman | Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
| A Cheap and Simple EPROM Programmer | This article will show you how to build an EPROM programmer. Those interested in peripherals for the Sinclairs (floppy disk, electronic typewriters, etc.) can design monitors and controllers for those devices. Eventually you can program independent microprocessors for special purposes. | Sinclair ZX81, Timex/Sinclair 1000 |
| A Loan Amortization Program | This program calculates monthly payments and generates an amortization schedule on consumer loans or home mortgages. The payment tells the user how much of a monthly commitment he is making, and the amortization schedule how much of the payment is being applied to interest and how much to reduce the balance on the loan. | Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
| A Personal Money Management Program | When the program has been activated, simply enter income, expense, and loan principal items each month. The computer will then provide you with: An income statement for the current month and the year-to-date. An expense statement for the current month and the year-to-date. A balance sheet showing your various assets, liabilities, and net worth. A | Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
| As Easy as 2+2 | Ever thought about learning to program in machine code? Maybe you have. Maybe you even got far enough to open one of those thick books full of jargon and technical details. Maybe you got far enough into it to be scared away. | Sinclair ZX81, Type-in program |
| Bug Alert | Correction to reverse-video driver, “Adding on to Gladstone”. | Timex/Sinclair 1000, Type-in program |
| Calculating the Days | Knowing the number of days between two dates is frequently necessary for calculating interest, apportioning expenditures, or calculating average use of items. We are also interested in the more trivia type questions such as how many days before an important date, how many days between certain historical dates, and even how many days we have | Sinclair ZX81, Type-in program |
| Checkbook Management | A computer with its TV display, makes the task of updating and balancing a checkbook simpler than using a four-function calculator. The display enables the user to double-check entries and so helps eliminate mistakes. In addition, if mistakes are made, they are easily corrected. Below are two programs which I developed for these purposes. Each | Sinclair ZX81, Type-in program |
| For Your Support | Hardware and software offerings from Chia-Chi Chao, Mike Trivisonno, Jack Donahy, Fred Nachbaur, Tim Worcester, Games to Learn By, Kraig Pritts, John Oliger, Tom Woods and Knighted Computers. | Timex/Sinclair 1000, Timex/Sinclair 2068 |
| Hardware Tips | Strong KBD Signals Again; Overheating Problems; RAM Expansion Problems. | |
| Installing a UHF Modulator | Convert the ZX81 to UHF as a way of combatting interference. | Sinclair ZX81 |
| INTERP - The Kernel of Interactive Nuts | In this article we present an easily extended, interactive interpreter, providing a stack oriented, dictionary based programming environment similar to FORTH. The interpreter is, thus, the basis for the more friendly, more interactive use of your computer. The ease with which INTERP can be coded is a dramatic demonstration of the power of the ZX81 | Sinclair ZX81, Type-in program |
| Just For Fun | Bombsmash; Space Pirate Attack; Space Age Graphics; Driver | Sinclair ZX81, Type-in program |
| Keeping Time in the Home Office | Since the Sinclair computers have an internal timing feature, they can be used to make a clock display which will give you the time. Two basic programs are given below to do just that. | Timex/Sinclair 1000, Type-in program |
| Letter from England (Sync v3 n1) | One of the advantages of living in England, home of Sinclair Research, is that we get to try out some of the “extras” before anyone else. Here are some of the things that may cross the Atlantic from England for the ZX81. | Timex/Sinclair 1000 |
| Letters | Help Wanted; New Product Problems; Elimination; DEF and PAUSE | |
| Making Backups for Machine Language Tapes | There are two methods which can be used to make a backup: copying to a second tape or use the PEEK and POKE facilities of the ZX81. | Sinclair ZX81, Type-in program |
| MEMONOTES Makes Debut | Quarterly newsletter, for owners of Memotext and/or Memocalc and truly serious 1000 owners, is available. | Timex/Sinclair 1000 |
| Merging With Randomness | Seeding the RND function for greater randomness. | Sinclair ZX81, Type-in program |
| Multisave | Wouldn’t it be nice 1) to key in the number of saves required and leave the ZX81 to complete that number of identical copies? 2) not have to check what variables have been assigned before incorporating this feature in a program? 3) to retain the normal, single-save mode? If this appeals to you, try the | Sinclair ZX81, Type-in program |
| Off the Wall | Short program that makes the TS 1000 attempt to list its own ROM. | Timex/Sinclair 1000, Type-in program |
| Programming the LOAD Command | Do you have some machine code programs stored on tape that require POKEing RAMTOP before LOADing the program from cassette? Or are you writing your Basic programs around a favorite machine code POKEing routine? If so, knowing how to program the LOAD command can be a real convenience. | Sinclair ZX81, Type-in program |
| QSAVE | The QSAVE package consists of: 1) a hardware unit, 2) a software program, and 3) an instruction booklet. It performs tape SAVE, LOAD, and verify at 4000 BAUD. | Sinclair ZX81 |
| Resources (Sync v3 n1) | Listing of new user groups, books and other resources. | Timex/Sinclair 1000 |
| Saving Your Fingers | Edit existing lines and renumber to create multiple instances where the lines are very similar. | Sinclair ZX81 |
| Software Lo-Res for TS 1000 | Machine language utility to create large characters on the screen. | Timex/Sinclair 1000, Type-in program |
| Starblasters | In “Starblasters” you must defend a sector of space from the invading alien spaceships. Your weapon is a powerful ion beam. But beware! The aliens can fire back. They can blow up your ship or even overrun your sector. Although you have five excellent ships in your fleet, you must be quick, skillful, and sometimes | Sinclair ZX81, Timex/Sinclair 1000, Downloadable, Type-in program |
| Sync Notes | | |
| The Stock Market Calculator | The Stock Market Calculator helps the investor (or user) solve the complex equations inherent in Investment Analysis. | Sinclair ZX81 |
| The Unprintable Characters | | Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
| The ZX Data-Finder | The ZX Data-Finder is one of quite a variety of data handling programs now available. Typical uses for such programs include: names & addresses; inventory catalogues; customer/client records; graphic charts; product descriptions; statistics; appointment calendar; personnel files; hobby collection/with cross referencing. ZX Data-Finder does these and more because the flexibility of the program lends itself | Sinclair ZX81 |
| Tidying Up Your Display | Routines to print, display and sum series of values. | Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
| Try This | | Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000, Type-in program |
| UPD Modifications | “Print an ASCII character” routine for Centronics interface from EPROM Services. Patch for the “Universal Printer Driver“. | Timex/Sinclair 2068, Type-in program |
| Vu-Calc | Vu-Calc, developed for the Timex/Sinclair 1000 with 16K RAM, displays a table of 36 columns (numbered 01 through 36) and 26 rows (designated A through Z). Each of the 936 boxes can store up to eight characters, alpha or numeric. The screen displays 27 boxes at a time, three columns by nine rows. The “window” | Timex/Sinclair 1000 |
| Who Won? | Gregory Harder, Denver, CO, came in first with Software LO-Res and John Byrne of Cookeville, TN, took second place with GET input program. In the 2068 corner, first prize went to John Nguyen of Louisville, KY, for submitting PIX FIX, and second prize went to Wes Brzozowski of Endicott, NY for his fully implemented 64 | Timex/Sinclair 1000, Timex/Sinclair 2068 |
