These are a few KiCad projects for PCBs that I created when dealing with my Amigas. The PCBs might be useful for other people, so here they are.
All the PCBs are open hardware and free to use subject to the terms of the GPLv2 licence. Refer to the file LICENSE for further details.
This is a Floppy-Swapper using a multiplexer 74HCT153 instead of an elaborate mechanical switch. As it turns out this is more reliable and even cheaper than the purely mechanical approach. As an extra benefit, you can combine this with the Key-Tap to use your Keyboard to swap the drives.
A simple PCB that allows tapping the Processor signals on a .1" Pin Header. Very useful for setting up a debugging rig.