The NPT Log Record
The contents of the NPT log record are as follows: 1-42 the first 14 bytes of
bytes, 2 alphabetic
teleprocessing buffer.
the teleprocessing buffer
dashes, and the last 6
including BSC
bytes of the 44-57 59-60 63-78
For read I/O: the last seven bytes of the CSW. For write I/O: blank, not applicable
The sense byte, if any.
The ccw associated with the I/O operation.
The fields of the record are separated by blanks. The following are
sa.ples of read and write log records for NPT: 2D 0797EOOC000003 1070 0798280C0001AC 1002E2C9C7D5D6D5404040E3C5E2--404040404003 1061 0798280D0001FF 37
----------V---------------
First 14 bytes 0797EOOE000004 01 0797EOOE000004 01 I I I A L V-----J V , Last 6 bytes CSW I I SENSE TP Buffer BYTE 02079BF820000004 0207987160000002 02079BF820000200 0107987160000002 02079BF820000200 02079BF820000004 02079BP820000004 I I --------v----..II CCW The dashes in record positions 1 and 2 indicate that there was no
data transfer for that I/O transaction.
342 IBM VM/370 System Programmer's Guide

Appendixes • Appendix A: system/370 Information • Appendix B: MULTI-LEAVING • Appendix c: VM Monitor Tape For.at and Content
Appendix A: Systea/310 Information 343