* Unknown what happens on accessing the unused region via OUT [7Fxxh],FCh..FFh
* Chipset / Schematic is unknown
== Newer Info ==
Having a short look at the article, it seems to be all different as than expected:
* There is no dk'tronics compatibility intended - however, c't and dk'tronics are based on the CPC6128 banking mechanism, so they work similar, and to some level there is some (unintended) compatibility. Namely, ONE HALF of the memory can be accessed in dk'tronics style fashion.
* There seems to be no hardware based "Video RAM" support at all. However, there's some unspectacular software based example included that copies expansion RAM to VRAM via LDIR opcode.
== Scanned Article / Schematics ==