SIOD and SIOT mapping and field descriptions
- Byte (hex)
- Contents
- 00–03
- Record ID:
- "SIOD" for DINCB
- "SIOT" for RWNCB
- 04
- ID is the primary address space ID (ASID). This field is 0 if
the ASID is greater than X'FF'.
- 05
- State
- 06
- 0
- 07
- For SIOD, 0
For SIOT, type:
- For the CDLC DLC: C
- For the HYPERchannel DLC: H
- For the LCS DLC: L
- For the CLAW DLC: W
- For the CTC DLC: X
- For the Hyperchannel DLC: H
- 08–0B
- Channel device name in EBCDIC (either a CUA or device number)
- 0C–0F
- NCB address
- 10–13
- Flag bytes (NCBFLAGS)
- 14–17
- Virtual channel address word (NCBCAW)
- 18–1F
- First channel command word (CCW)
