- Entry:
- BTSK
- VIT option:
- PSS
- Event:
- Begin a subtask
- VIT processing module:
- ISTRACPS
- Control is returned to:
- The subtask that is just starting
This trace record is written when a VTAM® subtask begins execution. This record can appear in the internal trace table before the ATSK entry for the ATTACH of the subtask.
Some subtasks start without generating this entry.
- Byte (hex)
- Contents
- 00–03
- Record ID: "BTSK"
- 04
- ID is the primary address space ID (ASID). This field is 0 if the ASID is greater than X'FF'.
- 05–07
- 0
- 08–0F
- Name of the subtask that was entered
- 10–13
- TCB address of the current subtask
- 14–17
- Entry point into the subtask
- 18–1B
- 0
- 1C–1F
- Contents of register 1 upon entry