The attribute area contains the following:
- Byte
- Contents
- 0
- Length of the attribute area (X'0A') This must be filled
in prior to calling the unit verification service.
- 1-2
- Flags describing the unit name:
- Bit 0 on — unit name is an esoteric group name
- Bit 1 on — unit name is VIO-eligible
- Bit 2 on — unit name contains 3330V units
- Bit 3 on — unit name contains TP class devices
- Bits 4-7 are not used.
- 3
- Number of device classes in the unit name
- 4-7
- Number of generic device types in the unit name
- 8-9
- Reserved
Register 15 contains one of the following return codes:
- Code
- Meaning
- 0
- The unit name was found; the attributes are returned.
- 4
- The unit name was not found; no attributes are returned.
- 24
- The JESCT does not contain valid pointers.
- 28
- The required input is not specified or is not valid.
- 36
- An empty UCB list is being returned.