Date: May/June 1981
Volume: 1
Issue: 3
Articles
| Title | Description | Computers |
|---|---|---|
| 8K Basic ROM and 16K-Byte RAM Pack Specifications | Sinclair ZX80 | |
| A Trick and a Graphic System | Sinclair ZX80 | |
| Auto-Display-Changing | How Is It Done? A series of articles. | Sinclair ZX80 |
| Black Hole | Game based on an Elf (RCA 1802) machine language program. | Sinclair ZX80 |
| Forest Treasure | “Forest Treasure” is based upon “Random Graphics” by Gary McGath in the Jan/Feb 1981 issue of SYNC. You are riding through a forest, seeking the gold treasure. You are represented by “£” and the treasure is a blank space. During your ride you may encounter enchanted (invisible) walls. When touched, these walls will alter your | Sinclair ZX80 |
| Gauntlet | Gauntlet is a game played on a rectangle 19 spaces by 6 spaces. The object is to run a gauntlet of random obstacles and monsters, beginning on the left side and crossing the rectangle. You win when you have successfully moved your marker to the right side. | Sinclair ZX80 |
| Graphics Surprises | When we combine the uncertainty of the ZX80’s randomizing feature with its graphics capacities, we have the ingredients for a lot of fun. For example, the Crazy Quilt program uses only two instructions, yet it fills the screen with a zany tangle of symbols and spots. A more challenging application of graphics and randomizing is | Sinclair ZX80 |
| Graphics, Games and Gold | Graphic adventure game: the hero roams within a randomly generated wood, cave or castle, encountering monsters and treasures. | Sinclair ZX80 |
| Hammurabi in 1k | Player manages an economy. | Sinclair ZX80 |
| Handling Character Strings in the ZX80 | Using USR(47) to find the address of a string variable and peeks/pokes to manipulate the string. | Sinclair ZX80 |
| Key Click Generator | This simple circuit will produce an audible tone whenever the ZX80 screen is blanked, yielding a click to indicate key closure, or a steady tone during processing. | Sinclair ZX80 |
| Looking inside the ZX80 | Basic routines to show the ROM contents. | Sinclair ZX80 |
| Mastermind | This game is played much like the original board version. The computer selects a code of four colors from a possible six: red. orange, yellow, green, blue, and white (duplicates allowed). It is now up to you to find, in nine moves or less, the exact color and position of each element of the code | Sinclair ZX80 |
| More Truth in Programming | As long as an expression produces only logical values (0 or -1), you can safely use NOT. Expressions such as IF NOT (A = B) THEN GO TO 10 or IF NOT (X 5 AND Y 8) THEN GO TO 10 are fine. They only deal with logical operators. The value inside the parentheses will | Sinclair ZX80 |
| Resources for the ZX80 and MicroAce (Sync v1 n3) | Entries from manufacturers and readers. Includes the name of the item, a brief description, price and complete data on how to obtain it. | MicroAce, Sinclair ZX80 |
| Software Review: Unfriendly Skies | Softsync’s Super ZX80 Invasion. Using an active display to produce true animation. The tape comes with both 1K and 2K versions of the game. | Sinclair ZX80 |
| SYNC Reader Survey | ||
| The SYNC Challenge | Winners of the challenge printed in the first issue. | Sinclair ZX80 |
| The ZX80 Keyboard | Technical description of the keyboard, schematic of the associated circuitry and machine language code for accessing the keyboard. | Sinclair ZX80 |
| Translating From Other Basics | Translating ON … GOTO and LEN() to 4K BASIC. | Sinclair ZX80 |
| Try This | Two line program. | Sinclair ZX80 |
| Variable Conversions in the ZX80 | There are many cases when it is convenient to convert one type of variable to another, such as numeric to string, or string to numeric. In the ZX80 variable conversions from numeric to string are done with the STR$() function. The reverse conversion is not available with the 4K Basic. Given a string variable containing | Sinclair ZX80 |
| ZX81 Announced in Great Britain | An improved version of the ZX80 computer, the ZX81 has been redesigned to incorporate a number of new features. The ZX80 reduced the number of integrated circuits to 21, but the ZX81 further reduces the number of chips to four by using a new custom-built chip that replaces 18 others. The 8k Basic ROM chip | Sinclair ZX81 |
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