MG2 is a 2 megabit game which is 512k, it works fine - i used to play it 
GOOD NEWS: we now got the stable firmware version. All CF cards that we were testing on several MSX machines worked without a problem. Moreover the cartridge works properly with CF-to-SD card adapters, so you can use SD cards with this cartridge too. Here's the picture of the new boards that have just arrived:
For those who buy this board I will provide the list of components, the ROM image and the latest Altera's firmware. The project is not public yet, but is already in pretty good shape. Please contact me if you are interested to buy the board. The boards costs 4 euros, shipment within EU is from 2 to 4 euros depending on the number of boards you need. At the moment 5 boards are available. Please note that I will not sell anything else than these boards.
We are now writing the software to work with the new multiflash cartridge. So far we are able to load ROMs and use this cartridge as SCC. It plays the SCC music quite close to the original. Still to do is to write the boot loader that will allow to select ROMs and disk images that are stored inside the 64mb flash chip. This is quite challenging and time consuming task.
Also from my own experience I can tell that assembling this cartridge was a hell of a job, literally, "hell". Soldering the big Altera chip took several hours, correcting the mess took 2 more hours. So if you are brave enough to do this, you need expert level soldering skills in order to do this painlessly. Otherwise you will spend many hours swearing and doing needle work.
