This device consists of two cartridges:
* MA-20(R): MSX Version Up Adapter (MSX1 to MSX2), ROM
containing MSX BASIC Ver.2.0 main ROM, Real time clock
IC, Battery backup function.
* MA-20(V): MSX Version Up Adapter (MSX1 to MSX2),
cartridge containing MSX VIDEO V-9938, Video RAM (VRAM)
128KB, RF output, CVBS output, Analog RGB output
Several photographs can be found on the FAQ. Here is
the most important one:
http://www.funet.fi/pub/msx/photos/hardware/NEOS_MSX2_Adapter.jpg
I guess the output should be rendered to a new videosource.
This was already implemented, wasn't it?
Yes, this has already been implemented, closing.