Hello Jurgen
I have now also finally come to convert my Atari 400 on the SUPERCOLOR CPU.
Since the computer was once open, I also directly integrated the 48K ATARI CO61553 extension.
The video image is very good, could perhaps have some more color, but nothing has changed at the SPUU (I use NTSC)
And my 48K extension works now synonymous
Many Thanks
Mikel