Author Archives: admin

SC131 ‘Z80’ SBC

Posted on November 3, 2020 by admin

I’ve had this item on my to do list since 1991 and at the time I got hold of some great books on the topic and sketched out some basic designs I never found the time to design/build my very … Continue reading →

Posted in 8 Bit Computer, CPM, Hardware | Leave a comment

Modern Retro Computer

Posted on October 27, 2020 by admin

A couple of new Arduino Nano’s arrived in the mail today so decided what better time to build a modern retro computer about as powerful as a ZX80 Spectrum from 1980. Total cost about $40. The Nano on the left … Continue reading →

Posted in 8 Bit Computer, Hardware, Micro controller | Leave a comment

Vital Message

Posted on August 25, 2020 by admin

My second BASIC to C conversion using the classic Usborne 1980s computer books which helped many of today’s tech professionals were inspired by the Usborne computing books they read as children. The books included program listings for such iconic computers as the … Continue reading →

Posted in BASIC, C, Commodore, Programming, Retro, Software | Leave a comment

Robot Missile

Posted on August 24, 2020 by admin

Usborne 1980s computer books helped many of today’s tech professionals were inspired by the Usborne computing books they read as children. The books included program listings for such iconic computers as the ZX Spectrum, the BBC Micro and the Commodore 64, … Continue reading →

Posted in BASIC, C, Commodore, Programming, Retro | Leave a comment

Blinking LED

Posted on August 20, 2020 by admin

Raspberry Pi project #1, the blinking of an LED using C and the wiringPi library. I know this isn’t necessarily anything special but I wanted to record my little projects and what better place to start than by building a … Continue reading →

Posted in C, Programming | Leave a comment

Day of Week

Posted on July 29, 2020 by admin

Here is a simply C program that lets you enter a number from 1 -7 (valid options) or higher than 7 as an invalid entry. Using multiple if…else decisions the program will display a corresponding day of the week.

Posted in C, Programming | Leave a comment

Hello World ‘x86’

Posted on July 20, 2020 by admin

Been about 25 years since I’ve written anything in x86 assembler so thought it might be fun to install NASAM and write a simple ‘Hello World’

Posted in x86 Assembly Lanuage | Leave a comment

Hello World ‘C’

Posted on July 16, 2020 by admin

Been playing around with my Raspberry Pi 4 which I’ve installed in a great retro looking desktop case. Anyway I’ve never written anything in C for the Pi so though I’d have a go putting out the classic ‘Hello World’

Posted in C, Programming | Leave a comment

Retro Computer Kit

Posted on June 27, 2020 by admin

Early in September 2019 while on holidays in London I had a couple of free days available and decided to head north to Cambridge to visit the Centre for Computing History which was having an event day. Hidden away in … Continue reading →

Posted in 8 Bit Computer, BASIC, Hardware, Retro | Leave a comment

Adding commands to BASIC using a wedge

Posted on May 27, 2020 by admin

This Commodore 64 source code (6510 assembly language, Kick Assembler format) adds four new commands to the standard Commodore BASIC v2 and will give you an idea of how to add your own commands to the BASIC via a wedge. … Continue reading →

Posted in BASIC, Commodore, Programming, Software | Leave a comment