The OEM Auxiliary Device Query Reply
The OEM Auxiliary Device query reply format is as follows:
| Offset | Length | Content | Meaning |
|---|---|---|---|
| 0–1 | 1 word | Length | Length of structure (includes self-defining parameters) |
| 2 | 1 byte | X'81' | Query reply ID |
| 3 | 1 byte | X'8F' | OEM query reply |
| 4–5 | 2 bytes | FLAGS | Reserved |
| 6–13 | 4 words | DTYPE | Device type |
| 14–21 | 4 words | UNAME | User assigned name |
| 22 | 1 byte | X'04' | Parameter length |
| 23 | 1 byte | X'01' | Direct access |
| 24–25 | 1 word | DOID | Destination/origin ID assigned by the subsystem |
Refer to IBM 3270 Information Display System Data Stream Programmer's Reference for the field definitions for this query reply.
The OEM auxiliary device processor supports two self-defining parameters, 01 and 03. These are defined in OEM Auxiliary Device Direct Access Self-Defining Parameter.