X'DB' through X'FA' trace entry

The X'DB' through X'FA' trace entries

 TRACE ID   = X'DB' - X'FA'
 
       word 0 — byte 1 - X'DB' through X'FA'PSTFNCTN - Buffer handler trace - 
                         This is the function
                         from X'DB' thru X'FA' for which the trace
                         was written (see note 1 below).
                byte 2 - PST number (see note 2 below)
                bytes 3-4 - Trace sequence number               
       word 1 - bytes 1-2 - PSTDMBNM - DMB number.  This field
                            indicates which DMB is being used.  
                            The DMB directory (DDIR) gives the 
                            first DMB.
                byte 3 - PSTDCBNM - DCB number
                byte 4 - PSTRTCDE - Usually
                         indicates an error if nonzero.  If an error,
                         PSTDATA may contain residual data from the 
                         last call (see note 3 below)
       word 2 - byte 1 - PSTTRMID - ID of the module calling the buffer 
                         handler
                byte 2 - PSTTRMSC - Subcode of the module calling the
                         buffer handler
                byte 3 - PSTBHFLG - DL/I buffer handler flags
                byte 4 - PSTSUBCD - Buffer handler internal work byte
       word 3 - PSTDSGA - Address of the DSG 
       word 4 - PSTDATA - Address in real storage of the requested data.
                May point to the last retrieved data address in a call 
                (failed abend) (see note 4 below).
       word 5 - PSTBUFFA - Address of buffer header.  OSAM uses IBFPRF 
                DSECT.  VSAM uses IDABUFC DSECT.
       word 6 - PSTISAMW - Work area
       word 7 - PSTBYTNM - Relative byte number of data or 
                block number (see note 5 below).