Bits in the prefix descriptor byte
The delete byte is also used for the root segment of a DEDB, only there it is called a prefix descriptor byte.
This topic contains Diagnosis, Modification, and Tuning information.
The meaning of each bit, when turned on, is as follows:
- Bit
- Meaning When Root Segment Prefix Descriptor is Turned On
- 0
- Sequential dependent segment is defined.
- 1-3
- These bits are reserved.
- 4-7
- If the number of defined segments is 8 or less, bits 4 through 7 contain the highest defined segment code. Otherwise, the bits are set to 000.