You can developp very freely, even the RST vectors are free usable. Also the second register set of the Z80 is freely usable.
* '''Z80 Assembler:''' You can use an assembler for AmsDOS or for CP/M. Switching between AmsDOS and FutureOS is fast and using |FDESK allows to come back to AmsDOS with the first 48 KB or RAM remaining untouched.
* '''Programming in C for FutureOS:''' With [[FIOLIB]] it also possible to use C as a programming language.
== Applications ==