Int 68 Fn FE  - Appc/pc - Set Trace Destination                            [N]

   AH = FEh
   AL = trace destinations (see below)
   DS:DX -> trace stats record if AL bit 0 set

See Also: AH=FCh,AH=FDh

Bitfields for trace destinations:
 bit 0 storage (DS:DX -> trace stats record)
 bit 1 display
 bit 2 file (trace written to file OUTPUT.PC)
 bit 3 printer

Format of Trace Statistics Record:
Offset Size    Description
 00h   DWORD   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   DWORD   (high-order byte first!) number of records written (init to 0)
 0Ch   DWORD   reserved

Note:  do not move record while trace is active