It have 64KB * 4 Area or 128KB * 2 Area.
You can chose any Area to save data.
[Why did I make RAM-Card]
I had used BC1RZ connector made from FUJISOKU.
FUJISOKU don't make BC1RZ connector and memory-card anymore.
That is why I made RAM-card.
[I want to help you]
If you want to use BC1RZ connector and Memory-card, please ask me.I tell you about RAM-card.
Please E-mail me! katotechno@gmail.com