INT 68 - APPC/PCIBM PC - SET TRACE DESTINATION
	AH = FEh
	AL = trace destinations (see #03708)
	DS:DX -> trace stats record if AL bit 0 set (see #03709)
SeeAlso: AH=FCh,AH=FDh


Bitfields for trace destinations:
Bit(s)	Description	(Table 03708)
 0	storage (DS:DX -> trace stats record)
 1	display
 2	file (trace written to file OUTPUT.PCIBM PC)
 3	printer


Format of APPC/PCIBM PC Trace Statistics Record:
Offset	Size	Description	(Table 03709)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	pointer to storage trace buffer
 04h	WORD	max number of 80-byte records in trace
 06h	WORD	(high-order byte first!) current record number (must init to 0)
 08h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	(high-order byte first!) number of records written (init to 0)
 0Ch	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	reserved
Note:	do not move record while trace is active