Here is a small project that I wanted to get dob for quite a while. It is a little PCB that can be used to swap how the Amiga sees the floppies. In one state everything is normal, and if a jumper is set, then DF0: and DF1: are swapped, so that you can boot… Continue reading Amiga Floppy Swapper
For Commodore Amiga 500 : 1.8 MB / 2MB Trapdoor Memory Expansion
The Amiga 500 is my favorite vintage Computer and I a building a lot of extensions for it. Originally, it comes with 512k of internal memory. While this seems to be a lot in comparison to the 64k of a Commodore C64 , nowadays it is pretty tight. Especially, if you want to use newer… Continue reading For Commodore Amiga 500 : 1.8 MB / 2MB Trapdoor Memory Expansion
Key-Tap: A hardware configurator for the Amiga 500
Update 2021/03: GIT repository available! In this post I want to provide the details of an older project I published in 2014 on a1k.org. This little piece of hardware is used to provide some means for configuring an Amiga 500 with the keyboard. This is to replace at least some of the small switches that are… Continue reading Key-Tap: A hardware configurator for the Amiga 500
Repairing an A501 Trapdoor expansion for Amiga 500
This post describes how I repaired an A501 Trapdoor memory expansion. I explain how to diagnose the error and some tricks how this can be done with just an Amiga 500. The symptoms are that the Amiga does not boot and indicates a yellow screen.
Changing the battery on a memory expanstion to a CR2032 battery
The batteries used for the backup voltage for the real time clocks and SRAM settings in vintage computers are a real nuisance today. These were used in nearly all personal computers back in the 80s and beginning of the 90s and every single one started to leak and damage the PCB of the surrounding system.… Continue reading Changing the battery on a memory expanstion to a CR2032 battery
This Blog will document some of my Electronic Projects I am working on or have finished. I am mainly interested in creating new hardware for vintage computers to improve the fun and usability.