Variables, DEF FN Definitions and Arrays Storage in Amstrad CPC/Locomotive BASIC
(The information in this article comes from reverse engineering Amstrad CPC BASIC. You can find the reverse engineered source code in my CPC BASIC source code repository. You can find an example BASIC program which ‘walks’ the storage areas in the Examples folder of that repository. See also the CPC Wiki page for more technical …. Read More
Couch To 64k Part 4: Adding a Keypad/Keyboard to our Z80 Breadboard Computer
In the previous part of this series we added a character LCD display to our breadboard computer. We discussed how input, output and address decoding works on the Z80, which means we know most of what we need to know to be able to add an input device. In this part we’ll be adding some …. Read More
Couch to 64k – a.k.a. Building a Z80 Breadboard Computer. Part 1: Pins
A lot of people build Z80 based computers. They build something with some flashing LEDs, some buttons, and maybe even a serial port. But the computers I loved as a kid had high-resolution displays, and keyboards, and joysticks attached. And you could spend your days playing games on them. So, I’m going to attempt to …. Read More