SYNC v3 n1

Date: January/February 1983
Volume: 3
Issue: 1

Articles

  • 256K Ram!
    Aerco offers a 256K RAM upgrade either configured as a RAMdisk or port mapped in 64K banks shadowing the cartridge bank.
  • 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
  • MEMONOTES Makes Debut
    Quarterly newsletter, for owners of Memotext and/or Memocalc and truly serious 1000 owners, is available.
  • 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.
  • Forum
    Letters from Jean-Claude Touzin, P. H. Skipper, Chris Sloan, Paul Bingham, Tony Gomez, Paul Edwards. Correction to article about TS1500 ROM bug fix that appeared in SyncWare News v2 n6 forum.
  • UPD Modifications
    “Print an ASCII character” routine for Centronics interface from EPROM Services. Patch for the “Universal Printer Driver“.
  • Bug Alert
    Correction to reverse-video driver, “Adding on to Gladstone”.
  • Software Lo-Res for TS 1000
    Machine language utility to create large characters on the screen.
  • Off the Wall
    Short program that makes the TS 1000 attempt to list its own ROM.
  • What, We Worry?
    Short, amusing piece about the three main individuals behind SyncWare News at the time: Tom Woods, Fred Nachbaur and Tom Bent.
  • Building a 2068 Database, Part 2
    Part 2 of a series in building CIDS, a database program.
  • 8K Updates
    Forest Treasure; Defuse; Mastermind; Hangman
  • 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”
  • 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
  • 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
  • The Stock Market Calculator
    The Stock Market Calculator helps the investor (or user) solve the complex equations inherent in Investment Analysis.
  • 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.
  • 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.
  • Resources (Sync v3 n1)
    Listing of new user groups, books and other resources.
  • Hardware Tips
    Strong KBD Signals Again; Overheating Problems; RAM Expansion Problems.
  • 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.
  • Installing a UHF Modulator
    Convert the ZX81 to UHF as a way of combatting interference.
  • 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
  • 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.
  • Merging With Randomness
    Seeding the RND function for greater randomness.
  • Saving Your Fingers
    Edit existing lines and renumber to create multiple instances where the lines are very similar.
  • 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.
  • The Unprintable Characters
  • 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
  • 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.
  • Tidying Up Your Display
    Routines to print, display and sum series of values.
  • 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
  • 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
  • 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.
  • 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.
  • 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
  • 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
  • Just For Fun
    Bombsmash; Space Pirate Attack; Space Age Graphics; Driver
  • Sync Notes
  • Try This
  • Letters
    Help Wanted; New Product Problems; Elimination; DEF and PAUSE

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