floppy contoller (F011) which drives internal FDD supports up to 7 disk drives also brings Commodore 65 internal DOS based on IEEE Commodore 8250 FDD - main problem of this DOS is 2 drives limit
modes: native, Commodore 64
Commodore 64 mode works not like in Commodore 128, it has all Commodore 65 extra features available, but this makes compatibility with Commodore 64 lower