UNDER LICENSE GPL Version 3
the schematic and PCB for this interfaz, make in KICAD target is to have a PCB is less than 10x10cm so it's very cheap.
WARNING - THIS IS WORK IN PROGRESS - NOT TESTED
The Advantage of this interfaz over the original are:
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4 Banks of ROM, so you can swap between original ROM and Quickdos, selectable by dip-switches, in the roms directory you can found it individually and one file ready to burn into a 28C256 flashrom.
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Included Fixed for +2A/+3, so can be used in any ZX Spectrum, selection by jumpers, compatibility with +2A/+3 is not yet tested.
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Reset Button
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Posibility of use crossed and plain floppy cable, and invert Drive 1 and Drive 2, very usefull if you have a Gotek and a real floppy. With plain floppy cable you can use up to 4 drives.