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I went further, and SMD'd nearly everything!

Candidate 2. 58.34mm x 38.74mm.
If I go ahead with these, they will be pre-assembled - apart from any headers and the DIP socket.

A possible new version of the lower case board. Minimised probably as much as I can - now down to 50.08 x 55.37mm.

OK - I am working on something.

Quick resurrection on this topic - suggestion is to just connect pin 37 of 6847 (FS) to pin 9 of the HCT161? Obviously still connect MS on motherboard to MS on 6847 - but do NOT connect MS to FS on the daughterboard?

SuperRGB boards now available via ebay and my own website: https://www.ebay.co.uk/itm/236131257361 https://dragonpluselectronics.com/product/superrgb-6x09-for-dragon-and-coco-12-computers/ The extender cable is also available: https://www.ebay.co.uk/itm/236131261667 I will, of course, combine shippi...

One board remains: https://dragonpluselectronics.com/product/supersprite-fm-6x09-for-dragon-and-coco-computers/ This is the last of these boards in this 'real hardware' format - due to the difficulty of getting V9958 chips now. SuperSprite FM+ will likely return in the future, when I find some time ...

Your pic makes it look like you connect the two together yourself as well as them being connected on the motherboard! Yes - as it was originally a replica of what the 200E card was, and isn't ~FS and ~MS also tied on there? It is on the traces I got from (I think) Rob originally? You may, however, ...

This is exactly what is on my board...I think. I have the below connections Pin 12 Socket = Pin 12 6847 = Pin 37 6847 = Pin 9 LS161 Pin 37 Socket = N/C ~MS~FS.jpg So yes, it is reliant on the motherboard having ~FS and ~MS connected. I don't see the issue here. If we're saying change the circuit jus...

Just a little note: if you re-spin, can you ensure you take the FS# signal from that pin of the VDG? I think we learnt that your board uses the fact that FS# and MS# are connected on the motherboard. And the way we learnt this was that earlier versions of my D64 motherboard remake didn't connect th...