X-DDOS is a disc and hard disc operating system from the german company Dobbertin Industrie Electronic. It provides 0.7 MB floppy disc formats for B drives and allows to access the [[Dobbertin Harddisc]] HD20. X-DDOS is delivered as a 16 KB EPROM with a lot of software and a manual.
X-DDOS can be used as a rom 7 replacement.
RSX commands:
(same as AMSDOS)
|A, |B, |CPM, |DISC, |DISC.IN, |DISC.OUT, |TAPE, |TAPE.IN, |TAPE.OUT, |DRIVE, |USER, |ERA, |REN
(same as VDOS)
|CAS, |CAS.IN, |CAS.OUT
|ATTRIBUT
|FORMAT
|SYSCOPY
|TYPE
|X
|XDRIVE
|GDUMP
|HELP
|ROMOFF
|AMSDOS
|FAST
|SLOW
|DIR128
|DIR64
== Floppy Discs ==
X-DDOS supports CP/M and CP/M Plus on 0.7 MB B-drives.
The RSX command !HELP displays the command summary of X-DDOS. The commands of AmsDOS are integrated as a subset.
== Hard Disc HD 20 ==