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SYNC v2 n3

Date: May/June 1982
Volume: 2
Issue: 3

Articles

Title Description Computers
An Alternative Display Method - Tank Battle This game itself inspired by Lloyd Johnson’s article “Paint Duel” in Creative Computing (July 1981). The player attempts to destroy the computer’s tank by hitting it with a well-placed shot. Sinclair ZX80
An Introduction to Expression Evaluation In the Sinclair 8K ROM program of the ZX80/81 the “expression evaluator” is to be found at 0F55-111Bh (improved 8K ROM) and forms an essential part of the program. A study of the fundamental parts of the “expression evaluator” can be very useful as it enables Basic programmers to understand many of the limitations and Sinclair ZX81, Timex/Sinclair 1000
Character Reverse Have you ever wanted to put a reverse character in a string but you had no way of doing it? Here is a simple answer, a small machine language program that will reverse a character for you. Sinclair ZX80
Developing a Memory Map Consensus Nick Lambert of Quicksilva proposed that suppliers for the Sinclair computers reach a consensus on some kind of memory map to avoid “a whole heap of problems” to everyone’s benefit. He proposed a ZX Computer Memory Map on a provisional basis for discussion. Sinclair ZX81
Glitchoidz Report
Just for Fun Renumbering by a USR Routine; Sweeper; Ed, the Head. Sinclair ZX80, Sinclair ZX81
Keyboard/System Conversion: The First 40/1 Keys The fundamental conversion described here can be made with almost any KB switch array. 40 keys, new or used, so long as the switches are normally open and are closed with a key stroke. Sinclair ZX80, Sinclair ZX81
Least Squares Data Analysis with the ZX80/81 One of the most common tasks of a computer is to perform statistical analysis and data manipulative type computations. Many of the computations involved are very tedious to perform by hand since they sometimes require a large number of reiterative calculations. Statistical analysis problems that take hours for a human (equipped only with pencil and Sinclair ZX80, Sinclair ZX81
Letters Help Wanted, Program Problems, ZX80 Slow Mode, The Hidden Chessmen Sinclair ZX81
Perceptions The ZX81 Parser and User-Defined Commands; More on the 16K RAM Pack Schematic; Addenda to “The ZX80/81 Video Display System.” Sinclair ZX80, Sinclair ZX81
Resources (Sync v2 n3) Listing of new user groups, books and other resources. Timex/Sinclair 1000
Software Review: ZX Galaxians Review of the Artic Computing program. Sinclair ZX80, Sinclair ZX81
Space Warp - A Graphics Space Game The objective of Space Warp is to reach your base before running out of fuel. In order to do this, you must think ahead and consider how your speed will affect your fuel consumption. Sinclair ZX80
Storing 3-Letter Words in an Array I wanted to develop a method of storing as many three-letter words as possible in my 1K ZX80). using as little memory as possible. The solution is based on the fact that charaeter numbers of the letters can be compounded into a single number, which can be stored in an array element. Thus three letters Sinclair ZX80
Sync Notes Timex Sinclair 1000; Questions about Sync. Timex/Sinclair 1000
Try This This column will feature short programs to show off your computer, impress your family and friends, and tickle your imagination when SYNC arrives at your place. Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000
Two Switch Human Interface for the Communicative Impaired The program will usually display three rows of characters on the screen at any lime: the upper alphabet (UA) row, the lower alphabet (LA) row, and the message row. which will be empty at first. The program allows the user to select letters from the alphabet rows for display in the message row. Sinclair ZX80, Sinclair ZX81, Timex/Sinclair 1000

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SYNC v2 n3
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