Date: July/August 1981
Volume: 1
Issue: 4
Articles
| Title | Description | Computers |
|---|---|---|
| 8K Basic ROM | While the 4K Integer Basic in the Sinclair ZX80 is adequate for many applications, most programmers will eventually feel a hunger for more power. True, advanced functions can be simulated by way of subroutines, but such measures eat memory at an alarming rate. Enter the 8K Basic ROM. The chip costs a mere $39.95, which | Sinclair ZX80 |
| A Parallel Interface for the ZX-80/MicroAce Computer | Construct a simple parallel interface for the ZX80/MicroAce computers with the Z-80 PIO. | MicroAce, Sinclair ZX80 |
| A Subroutine for Serial Data Output | Trying to write machine code subroutines for the ZX80 presented some problems. This article details the problems with their solutions, and shows a simple subroutine to output data serially by bit to an asynchronous peripheral. | Sinclair ZX80 |
| Bisection Interation Square Root Program | This program operates by means of bisection iteration, which is basically just a variation of the old high-low game. The size limitation of the integer basic (variable size) limits the maximum root to 181. | Sinclair ZX80 |
| Detective | A murder has been committed and the perpetrator has threatened to strike again! It is up to you to uncover the two pieces of evidence which will identify the murderer before he can carry out his threat. The game consists of searching the 4 rooms in the building where the crime occurred for the incriminating | Sinclair ZX80 |
| Glitchoidz Report | Corrections to errors, problems and other Glitchoid activities discovered in prior articles. | Sinclair ZX80 |
| Keyboard Beeper | Simple device that beeps when a key is pressed. | Sinclair ZX80 |
| Letters | Sinclair ZX80 | |
| Machine Code Keyboard Scanning Program | Machine code routine to decode the keyboard and a Basic program for entering/saving machine code programs. | Sinclair ZX80 |
| Mini-Billboard | Program to print an eight character string on two rather large lines to create a “Mini-Billboard” on the TV screen. | Sinclair ZX80 |
| Multi-Dimensional Arrays for the ZX80 | Techniques for simulating multi-dimensional arrays on the ZX80. | Sinclair ZX80 |
| Multiplication Three-in-a-Row | “Multiplication Three-in-a Row” is based on the program “Multiplication Bingo,” by Jean Wilson, Special Education teacher at Leadville High School, Leadville, Colorado. She was seeking a way to motivate students who were having difficulty learning to multiply and found that completing five in a row on a Bingo board helped supply the motivation. An array | Sinclair ZX80 |
| Perceptions | SYNCSUM is a method of checking whether you have entered the program correctly. If you are submitting an article, we ask you to include the SYNCSUM at the end of any program listing. | Sinclair ZX80 |
| Resources (Sync v1 n4) | Listing of new user groups, books and other resources. | MicroAce |
| Screen Scrolling | This article shows how a routine can he written and entered into a ZX80 that enables the user to SCROLL the display. In the 4K monitor there is no facility at all for doing other than printing to the last line of the display, and then, when the display is full, the program will stop | Sinclair ZX80 |
| Setting Up Bar Charts | This program listed works with 1K to chart two years of monthly checking account balances with vertical bars. The graph is set up for a range of $0 to $1500, but can be modified for other ranges with a few changes and some trial-and-error experimentation. | Sinclair ZX80 |
| Software Review: And the Walls Came Tumbling Down | After the successful introduction of Super ZX80 Invasion, Softsync has come out with Double Breakout, its second active display game. Double Breakout is just as much fun as Super ZX80 Invasion, and even more challenging. This, too, fits into 1K of memory. | Sinclair ZX80 |
| Sync Notes | ZX81 —The Family Increases; PERCEPTIONS; SYNCSUM; Spaces in PRINT Statements; MicroAce II????; SYNC Subscribers Pass the 6000 Mark; A P.S. from Alger Salt. | MicroAce, Sinclair ZX81 |
| The TL$ Function | Do not overlook the use of the TL$ function when you are creating programs. It is a very useful item. This function allows the ZX80 user to process a string in much the same way that other computers READ DATA statements. | Sinclair ZX80 |
| The ZX80 Makes the Grade | In this article we present two programs running on the 1K Basic machine. The first determines the test scores and keeps track of which question caused the class the greatest difficulty. The second finds the class distribution of grades, enabling the teacher to scale the grades. | Sinclair ZX80 |
| TR$ and LET A$=A$+B$ on the ZX80 | String handling on the ZX80 is reasonably good. The 4K Integer Basic lets the user print, input, and compare strings. and do specialized routines that will transform numbers into strings or characters. Sinclair’s Integer Basic has no string concatenation commands at all. The first will truncate a string from the right side, the second will | Sinclair ZX80 |
| Try This | Sinclair ZX80 |
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