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I'm sorry I only just understood your plot... The only times that really matter are when LO_READ or LO_WRITE are low. (It's nice to see that...

Please don't forget, that the M24 PSU can not work without an external load. It even can get damaged from this. Can you share the circuit diagram?

Could you use an external 3.5" floppy drive for a laptop and modify the cabling?

I had a Minisport back in the 90's (wishing now I never got rid of it). Even then those tiny diskettes were incredibly hard to find, not to mention...

This means you must be Bob Adamson per the Charles comments. Thanks for setting me straight. The version found on Github is still the 4 device one...

The most important one might be available at https://www.seasip.info/DOS/Win1/vga.html ...

I have been running this since the 19th, no glitches, no failure to report correct free space.... and no waiting 45 seconds after a DIR command! ...

Is this for collecting purposes? That is, you're looking for original floppies & manuals? You can easily download those items as "abandonware" off...

Excellent! Thanks.

I know, replying to myself is bad form... but I forgot to mention, thanks to both my coffee not having kicked in AND having to type on my phone that...

I see you have found some DIN connectors. If you run out, I may have access to some. I think I have right-angled male plugs (solder type) and...

Assuming RDx is the RAM Data, then the logic analyser is indicating potential problems somewhere... Unfortunately, a logic analyser is no good for...

Is that sold as a complete unit, or is the boom assembly a separate component? Sources?

The RM65 cards also came with an edge connector as well as the Euro type connector. It is just as valid and a lot easier to deal with. You might also...

On further investigation: The main control board had two 47uf 16V electrolytic caps one of which clearly had failed; I replaced both. There are...

Just curious how much memory (RAM) does your model 70 have.

?! PM me... Thanks! -CH-

Yeah, I think I have a good path forward with some interest by more people than just me who can do the work. Yes. I have personally already...

@DougIngram “For the Non-sys handler it is also called SDSK with four devices supported. SDA0, SDA1, SDB0 and SDB1. I have a version of serial disk...

So to add (yet another) 2c+GST - start playing! I know what I 'd like, and I also know that I'll never get round to doing it. And I can't force...

@cpu - just seen this some four years after you posted it :) I'd be really interested to get a copy if at all possible.

Matt, You are spot on the keyboard uses a standard early ACORN motherboard. I can see that to clarify if/how/why this keyboard I will need to...