User`s guide

Understanding Device Structures
Table 3–2 shows the relationships among devices, access methods, and structures.
Table 3–2: Device Structures
Structure
Device File Nonfile RT–11 Directory Non-RT–11 Directory
Random Access
Disk, diskette x x
VM x x
Sequential Access
Magtape x x
Printer x
Terminal x
3–6 Using RT–11 Commands