The core of the OS needs 64 KB ROM. Compatible products are EPROM-cards, the [[Inicron ROM-RAM-Box|ROM-RAM-BOX]], [[SYMBiFACE II|SYMBiFACE II]], [[Ramcard 128|RAMcard]], Jareks [[CPC.Flash|Flash-ROM]] or similar products. If you don't own such a card, you can take a look at '''FutureOS''' by using a compatible CPC Emulator ([[WinCPC|WinCPC]], [[CaPriCe|Caprice]], [[WinApe|WinApe]], [[!CPCemu|CPCEmu]]).
The core of the OS itself is executed directly in (Pseudo-)ROM or [[Dobbertin EPROM 224|EPROM]] where it is divided (in four 16 KB blocks). It jumps between the ROMs with the help of a little common area. Therefore the numbers of the four 16 KB ROMs are hardcoded.
'''FutureOS''' uses 2 KB (&B800...&BFFF) of the first 64 KB, all other ; the rest of the RAM can be used for is available to applications. Additional RAM can be occupied reserved for DIRectory buffering. Furthermore the OS uses memory management, file-handling and Low/Mid/High-level routines to access the hardware.
From AmsDOS/Basic you can start '''FutureOS''' can be launched from AmsDOS with the RSX commands |OS or |FDESK. If you use |FDESK you can leave '''FutureOS''' and get back to BASIC where you have stopped before - the first 48 KB (not the screen) have been preserved.
'''FutureOS''' only runs well on a [[CPC6128|CPC6128]] or 6128plus (not CPC464 or 664), because they of their support the for RAM configuration &C3 (which is essential for the mouse arrow of the GUIpointer).
== UI ==