For each device made available there is an entry with the following
format:
| Offsets |
Name |
Length |
Format |
Description |
|---|
| 0 |
0 |
SMF10DEV |
4 |
structure |
Device identification. Note: Virtual
I/O devices are identified by the following: - Device Class
- 0
- Unit Type
- 0
- Device Number
- X'7FFF'
It is important to understand the following: - Allocation messages for VIO data sets will show VIO ALLOCATED
TO ddname.
- SMF records will show VIO unit addresses as X'7FFF'.
- The actual in-storage UCB built for VIO will show address X'3FFF'.
For example, the messages: - IEF237I X'3FFF' ALLOCATED TO ddname
- IEF237I X'7FFF' ALLOCATED TO ddname
indicate that ddname is not allocated to a Virtual I/O device,
but is instead allocated to a real device whose unit address is X'3FFF' or X'7FFF' respectively.
|
| 0 |
0 |
SMF10DUT |
2 |
binary |
Device class and unit type. |
| 2 |
2 |
SMF10CUA |
2 |
binary |
Device number. |