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I like this solution because it should still be possible to use the original Dragon PSU.
I have wondered if you fed the DE9 plug with the correct DC voltages would that work?

If there are several problems no matter who's fault each one is then the whole deal seems like crap. I know it's unfair but usually if you can find a quick way of solving all the problems then all is forgiven. If the man has some competence then it would be possible to solve the problems simply by s...

Very nice photo Az.
I wish the board had been designed so the Pico could solder on directly without the standoffs. Maybe we should do a V2 which supports XRoar function keys and menu items.

Excellent work John. What's the best way of building this? Use a broken donor Dragon or buy all individual components? Does the board fit the Dragon case or is this totally different?

soft reset in xroar - so you'd have a reset button too That's actually a very neat idea. It would have to be a key combination or an extra key spliced into the matrix. Maybe the break key and the shift or an arrow? On the other end of things when are you going to allow us to set XRoar turbo mode fr...

Sorry I'm not with it. What's Control R?

If you study the KMK libraries there are ways of selecting from different key actions like using an ALT key. I did not get into that and massively simplified the code for the Dragon keyboard. However you have a whole empty row you could add a button or a selector switch to direct KMK to an alternati...

Hello Graham, My first approach would be that I don't actually care specifically what it's doing, it's simply getting corrupted. Some kind of noise or faulty signal is getting into the otherwise smooth operation of the computer. A simple but tiresome job would be to replace all the capacitors. One o...

That does sound interesting. So to run FLEX I'd need to upgrade to 64k? The Drive Wire server is a WiFi Pico? That's amazing.

Excellent teamwork Rob.
Do you know how this can be fed back into Lee Smith's Github? He supports a number of home computer keyboards but obviously missing the Dragon and CoCo.