I bought a couple of the Atari CX78+ joypads, with the DB9 connector.

They generally work in the A600GS, sadly the two buttons don't work independently, but both do work as a single fire button control. Also another caveat I found was that there is the occasional game that for some reason won't work properly as it thinks the fire buttons are permanently on (I also found this problem with the occasional game when using it with my Turbo Chameleon cartridge). Most games do work with it though.

So it works, but with some caveats.

This is what they write on the support site: By popular demand, the Amiga Forever series always included ROMs, floppy disk images and system updates and patches also taking into account "Classic Support" scenarios (for use outside of emulated Amiga systems).
https://www.amigaforever.com/news-events/classic-support-3-1/ it's old, CF mentionet but SD not (yet?)

Thats really useful, thanks. I have the CF pictured on that page, so I guess it includes the ROMs! I wish there was a place I could download them officially.

Thanks for your help

See if you can find "cloanto amiga forever essentials" on one of the alternative android APK sites - you can copy them over from your phone USB.
Failing that try archive.org - not gonna link here though not hard to find.

Hi SkulleateR and others in the thread,

Thanks for all the research and reporting your various settings. I am wondering if you have had any success with these titles? I just got a A1200NG and downloaded the latest version of CastlevaniaAGA (October 31, 2025) I am running the .HDF and am getting slowdowns especially on the first level. Creeping Me Out Hex Night is experiencing slowdowns as well. I am currently trying Demo 2. https://mixelslab.itch.io/creeping-me-out-hex-night I notice all these games were made with Scorpion Engine. Could there be something with Scorpion engine and A600GS/A1200NG? They run smoothly on my other emulation devices. I have tried them via AmiBench, the provided .HDF, and my own vanilla OS3.1 .HDF install. Let me know if you got any of these working smoothly. I will keep trying as well and report back if I get them working properly. Another weird one is that the classic demo State of the Art by Spaceballs slows down in a couple of parts as well. I am running that one from ADF in the launcher. Thanks so much!

Just wait for an updated Amiberry Version in the A600GS/A1200NG. The slightly older versions got that problems too but on high end SoCs like the pi400/pi500, it can compensate that with it´s CPU power