- Entry:
- IUT3
- VIT option:
- CIA
- Event:
- IUT process (Part 3)
- VIT processing module:
- ISTRACCI
- Control is returned to:
- The module that issued the INTRACE macroinstruction
This trace record is a continuation of the IUTx trace
record. 
- Byte (hex)
- Contents
- 00–03
- Record ID: C"IUT3"
- 04–07
- Length of data
- 08
- Version of CSM buffer descriptor
- 09
- Buffer Source
- 80
- ECSA
- 40
- Data space
- 20
- User data space
- 10
- User storage other than a data space
- 0A
- Buffer type
- 80
- Fixed
- 40
- Pageable
- 20
- Eligible to be made pageable
- 0C–17
- Buffer token or 0
- 18–1B
- CSM data space ALET
- 1C–1F
- Address of data