SYNC v3 n5

Date: September/October 1983

Volume: 3

Issue: 5

See all issues of SYNC

Buyer’s Guide Part 3: Sync at the Library.

Articles

Title	Description	Computers
3D Monster Maze and Mothership	In 3D Monster Maze you are in a maze running from T. (Tyrannosaurus) Rex. The object is to get out alive!	Sinclair ZX81, Timex/Sinclair 1000
Brick Buster	“Brick Buster” is a game in which the player earns points by knocking out as many of the bricks in the playing area as possible. On-screen scoring and a high score memory are provided for competitive playing. The active part of the game is written in machine code for fast action.	Sinclair ZX81, Timex/Sinclair 1000, Type-in program
Byteing Deeper Into Your Timex Sinclair 1000	Byteing Deeper into Your Timex Sinclair 1000 by Mark Harrison. John Wiley & Sons. 160 pp. Softbound. $12.95. Byteing Deeper into Your Timex Sinclair 1000 is catchy title, but do not take it too literally since the book was originally written for the ZX81 and retitled. Nevertheless, the content applies completely to the TS1000.	Timex/Sinclair 1000
Directory of Publishers	Bernard Babani The Grampians Shepherds Bush Rd. London W6 7NF U.K. Birkhauser Boston, Inc. 380 Green St. Cambridge, MA 02139 (617) 876-2337 E. Arthur Brown Co. 1702 Oak Knoll Dr. Alexandria, MN 56308 (612) 762-8847 CompuSoft Publishing, Inc. 535 Broadway El Cajon, CA 92021 (619) 588-0996 Computer and Electronic Supply Services PO Box 345, MIT Branch P.O.
Extensions to Basic	USR routines to invert every character on the screen, print bytes of free memory, create an inverse program listing, and simulate READ, DATA and RESTORE.	Sinclair ZX81, Timex/Sinclair 1000, Type-in program
Glitchoidz Report	The schematic should show a line from Gnd to the shielded cable as in the diagram below. [Figure: Corrected schematic showing a line from Gnd to the shielded cable to the monitor; +5, NPN transistor, Video, To tape recorder, 9V]
Hardware Tips	Robert Hartung comments on some letters from readers. His responses should be regarded as suggestions to help look for the answers.	Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000
In and Out of SYNC	Making Borders and a Bouncing Ball; The Panasonic JC-200 Personal Computer.
Just for Fun	Generally SYNC prefers articles in some depth to help you get more out of your computer. However, we receive many short programs that illustrate a point, demonstrate a technique, or show something the reader has found interesting. “Just for Fun” shares these programs with you. If you learn something, great.
Learning Timex Sinclair Basic	Learning Timex Sinclair Basic by David A. Lien. Compusoft Publishing. $14.95. If you have ever thrown down your TS1000 User Manual in despair—or disgust, help has finally arrived: David Lien’s Learning Timex Sinclair Basic. It is a clear, thorough guide to programming the Timex Sinclair 1000, but ZX81 and ZX80 users are not ignored.	Timex/Sinclair 1000
Letter from England (Sync v3 n5)	New computers, software libraries, compilers and assemblers, magazines, hardware developments (joysticks, printer interfaces, modems, tape copiers).	Timex/Sinclair 1000
Letters	Payroll: Follow-up to article in v3 n2 Sync; adding printing ability.
Mastering Machine Code on Your ZX81	Though written for the ZX81, Mastering Machine Code on Your ZX81 applies equally well to the Timex Sinclair 1000. Each chapter also includes addressing and programming procedures for the ZX80. The light conversational style is both entertaining and understandable.	Sinclair ZX81, Timex/Sinclair 1000
Memory Scrunching on the TS1000 and ZX81	One of the most serious problems that TS1000 users are faced with (and ZX81 users even more so) is the lack of memory (RAM). Most commercial programs require a 16K RAM pack, and many printed in newsletters and magazines require over 2K (or 1K for ZX81 people).	Sinclair ZX81, Timex/Sinclair 1000, Type-in program
Perceptions	The TS2000 series of computers claims an extensive group of features1—oth hardware and software. The machines feature 24K ROM. The TS2048 has 16K RAM at its disposal while the TS2068 wields a well-utilized 48K RAM. CPU and Operating System The TS2000 uses a Z80A microprocessor running at 3.5MHz.	Timex Computer 2048, Timex/Sinclair 2000, Timex/Sinclair 2068
Quick-draw!	More than two years ago, Sinclair announced that the 4K ROM of the ZX80 would be expanded to an 8K ROM and that one of the new commands would be DRAW. DRAW was just what it sounded like—a command to draw a line on the TV screen. But DRAW never came to be.	Timex/Sinclair 1000, Type-in program
Resources (Sync v3 n5)	Listing of new user groups, books and other resources.	Timex/Sinclair 1000
Sinclair ZX81/Timex Sinclair 1000 Statistics	Review of Sinclair ZX81/Timex Sinclair 1000 Statistics: Twelve 16K Programs Including Multif actor Analysis of Variance by A. H. Wolach and M. A. McHale.	Sinclair ZX81, Timex/Sinclair 1000
SYNC at the Library	Books available about the TS1000/ZX81 and TS2000/Spectrum.	Sinclair ZX Spectrum, Sinclair ZX81, Timex/Sinclair 1000, Timex/Sinclair 2000
Sync Notes	Editorial about the issue.
The Bookshelf Goes Supernova	Books about the Spectrum.	Sinclair ZX Spectrum, Timex/Sinclair 2000
The Logical Operators	AND and OR have two distinct usages in Sinclair Basic. One mirrors their use in English and is easily understood; the second is less straightforward, but is an extremely versatile programming technique. NOT, the third logical operator, is unfortunately overlooked or ignored by many beginner programmers; it, too, can be a powerful programming tool.
The ZX Stock Exchange	You have just inherited $10,000 from a wealthy uncle who made it big on the stock market. He also gave you the modem number of his broker, a computer. The ZX Stock Exchange carries stocks listed on the New York Stock Exchange as well as stocks not listed there.	Sinclair ZX81, Timex/Sinclair 1000, Type-in program
The ZX81 Companion	The ZX81 Companion, by Robert Maunder, Creative Computing Press, 131 pp., $9.95. The ZX81 Companion, like other ZX81 books, is totally applicable to the TS1000. It begins with a chapter on graphics techniques. First the screen field is explained.	Sinclair ZX81, Timex/Sinclair 1000
Try This	“Try This” features short programs to show off your computer, impress your family and friends, and tickle your imagination when SYNC arrives at your place. Send your contributions to: Try This, SYNC, 39 E. Hanover Ave., Morris Plains, NJ 07950. 8K ROM; 1K RAM Type in the following lines: Press RUN and ENTER.	Sinclair ZX81, Timex/Sinclair 1000, Type-in program
Using the Byte-Back Modem	Since buying my Sinclair ZX80, I have made so many changes that it is hardly recognizable. One of the most satisfying has been the addition of an RS232 interface and a modem. I have had a longstanding and probably irrational interest in data communications.	Sinclair ZX80