| Cannonade | In Cannonade you are the commander (choose your own rank) of a squad of six men. You have been given as your next objective the capture of an enemy gun emplacement. Your men must outmaneuver the gun’s handlers. If they are spotted as they are advancing, they may be fired upon. | Sinclair ZX80, Type-in program |
| Defuse | You are the Chief of Security in a major government building. You have just received a telephone message from a terrorist group claiming that they have planted a bomb somewhere in the building. Fortunately, you have the most sophisticated electronic detection equipment available. | Sinclair ZX80, Type-in program |
| Examining Prime Numbers: Two Programs | The first of the two programs below tests a set of numbers to see which members of the set are primes. The program asks for (and enters with INPUT statements) the beginning and the end of the set and displays those numbers in the chosen set which are primes. | Sinclair ZX80, Type-in program |
| Glitchoidz Report | A survey of Glitchoid activity reveals that they have favorite targets. In addition to spaces in PRINT statements noted in our last issue (SYNC 1:4, p. 3), semicolons should be carefully observed since these help arrange your display. Another place to look is in the use of parentheses and quotation marks. | |
| GRA+PIX: A System for Pixel Graphics | The following article describes a set of subroutines for drawing lines, arcs, regular geometric shapes, and sectors on the Sinclair ZX80 with the 8K Basic ROM and 16K RAM. The routines should also work on a ZX81 with 16K RAM. | Sinclair ZX81, Type-in program |
| Hangman | The old game of Hangman can also be played on your ZX80. The program listed below preserves not only the battle of wits between the two players, but also draws on the graphics capabilities of the ZX80 to draw the figure for you. | Sinclair ZX80, Sinclair ZX81, Type-in program |
| Hints & Tips For The ZX81 | Hints & Tips for the ZX81 by Andrew Hewson is excellent for the average ZX81 user who has little, or no knowledge of Z80 Machine Code programming, but would like to learn. There are sections on saving space in programs, understanding the Display File, converting ZX80 programs for use on the ZX81, how to let | Sinclair ZX81 |
| Kitchen Sync | Discussion of the ZX80 BASIC expression evaluator. | Sinclair ZX80 |
| Letters | REM on the 4K ROM; Mini-Billboard for 8K ROM; "Bar Charts" and Rubber Cement; Splitting Strings; Short Video Cable; The 5-6 Seconds of Silence. | Sinclair ZX80, Sinclair ZX81 |
| Machine Language Teaches the ZX80 to READ | Simulate the READ command with machine language routine. | Sinclair ZX80, Type-in program |
| Motorcycle Race Game | Test your skill and luck on a ZX80 motorcycle! In this game you compete with another rider on a 32 mile track on which you meet various obstacles and road conditions. The key to winning the race is meeting the obstacles with just the right speed. | Sinclair ZX80, Type-in program |
| Perceptions | A ROM Munching Session; Video Sync Signals; Video Modulator Drive Circuitry; Loading. | Sinclair ZX80 |
| Resources (Sync v1 n5) | Listing of new user groups, books and other resources. | |
| Robot Composer | As Richard Forsen has noted (SYNC 2:34), a series of tones can be generated by a series of FOR-NEXT loops. However, we are not accustomed to hearing this pitch scale of tones, and the duration of the tones varies inversely with the pitch. | Sinclair ZX80, Type-in program |
| Schematic of Sinclair 16K RAM Pack | | Sinclair ZX80 |
| Sync Notes | SYNC program listings; 8K ROM problems; SYNC subscriptions; ZX Microfair; SYNC in Microcomputer Index; SYNC Notes: UK; Sinclair Launches the ZX Printer; Sinclair to Sell ZX81 Retail. | Sinclair ZX80, Sinclair ZX81 |
| The "QS Sound Board" for the ZX80/81 | Play tunes in three-part harmony on your ZX80 or ZX81! Based on the extremely versatile AY-3-8910 sound generator chip, the QS Sound Board features complete software control of the frequency and amplitude of three independent output channels as well as an envelope shaper and noise channel. | Sinclair ZX80, Sinclair ZX81 |
| The Great Circle Route | "The Great Circle Route" shows something of its possibilities. After entering the program on your computer, enter the latitude and longitude of any two points in the world, and the computer will calculate and display the distance between them. This is the "great circle route." | Sinclair ZX81, Type-in program |
| The PEEK Function and the POKE Command | This article returns to Basic to discuss the PEEK function and the POKE command. Since the 8K ROM is now widely available, both the 4K ROM and the 8K ROM are included in the discussion and program illustrations. | Sinclair ZX80, Sinclair ZX81 |
| The ZX80/1 As Fortune Cookie | In addition to reputed oracular powers, the I Ching has proven to be a source of fascination for mathematicians and computer scientists. This ancient Chinese system of divination comprises one of the earliest known examples of a binary counting scheme. | Sinclair ZX80, Sinclair ZX81, Type-in program |
| Try This | This column will feature short programs to show off your ZX80, impress your family and friends, and tickle your imagination when SYNC arrives at your place. We invite your contributions. Address them to SYNC, 39 E. Hanover Ave., Morris Plains, NJ 07950. Enter: Press RUN and NEWLINE. | Sinclair ZX80, Type-in program |
| Using Key and Token Expressions | Keywords as well as tokens could be typed into program lines in full — spaces and all— with practically a single keystroke. | Sinclair ZX80, Type-in program |
| ZX81 Hardware Review (UK) | Listing of products and prices for ZX81 hardware. | Sinclair ZX81 |
