You must supply a two-word parameter list when invoking the unit
verification routine (IEFGB4UV, IEFAB4UV, or IEFEB4UV).
The first word contains the address of a unit table. The contents
vary according to the function(s) requested.
The second word contains the address of a 2 byte field (FLAGS),
in which you specify the function(s) requested.
The bits in the FLAGS parameter field have the following meanings:
- Bit
- Function Requested
- 0
- Check groups
- 1
- Check units
- 2
- Return unit name
- 3
- Return UCB addresses
- 4
- Return group ID
- 5
- Indicate unit name is a look-up value
- 6
- Return look-up value
- 7
- Convert device name to a look-up value
- 8
- Return attributes
- 9
- Check units with no validity bit
- 10
- Specify subpool for returned storage
- 11
- Return unit names for a device class
- 12-15
- Reserved for IBM® use