X'61' trace entry

The X'61' trace entry

 TRACE ID   = X'61'
 
      word 0  — byte 1 - X'61' OSAM POST
     				  byte 2 - Zero (no PST number)
					  bytes 3-4 - Trace sequence number
		word 1  — IOSB address
		word 2  — DCB  address  
		word 3  — byte  1   - DFSAOS70 INTERNAL TRACE BYTE  
                byte  2   - TOTAL I/O COUNT FOR THIS STARTIO  
                bytes 3-4 - Sequence number of associated X'60' entry
		word 4  — Buffer address
		word 5  — Buffer data (offset X'40' into buffer)
		word 6  — byte 1 - POST code
                byte 2 - not used 
                byte 3 - 'M' DCBFDAD seek value (MBBCCHHR)
                byte 4 - 'C' DCBFDAD seek value (MBBCCHHR)     
		word 7	— CHHR DCBFDAD seek value (MBBCCHHR)