Reportedly, the RAM is accessed in 128-byte sectors.
That, probably via The RAM is accessed using I/O ports, ie. unlike other It can not be banked in like common RAM expansions, the do. So it's a real RAM is probably disc, not mapped an RAM expansion.There was support for FutureOS for a while. That support was abandoned later due to the Z80 memory regionvery high price of the RAM disc (more than 1000 DM) corresponding to a very small number of units sold.
== I/O Ports ==
#F9FC - #F9FE Otten & Fecht 1 MB RAM-Disc (R/W) #FBF0 - #FBFF Otten & Fecht 1 MB RAM-Disc (R/W) (Data taken from the FutureOS manual).
