Blinking Cursor Module
Causes normal and syntax characters, plus various graphics, to blink.
Blinking Cursor Module Read More »
Causes normal and syntax characters, plus various graphics, to blink.
Blinking Cursor Module Read More »
Reprint of the article from the first Kitchen Sync column.
Expression Evaluators at Work Read More »
How to start using machine code on the ZX80/81.
An Introduction to Machine Code Read More »
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. Mentions QS Motherboard, which allows connecting 16K RAM and sound board at the same time.
The “QS Sound Board” for the ZX80/81 Read More »
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.
Setting Up Bar Charts Read More »
Keywords as well as tokens could be typed into program lines in full — spaces and all— with practically a single keystroke.
Using Key and Token Expressions Read More »
Corrections to 8K Digital Clock, Hexadecimal Math and 4K Blackjack.
Program Improvements Read More »
Edson Electronics offers educational programs for ZX80/81.
Educational Software Vendor Read More »
How to make a program unlistable; program for linear regression; painting heatsinks; FORTH; problems with 8K ROM/keyboard upgrade for ZX80; MicroAce flicker-free kit; large keyboard; edge connector cleaner.