Int 78 Fn 06  - Targa.dev - Set/clear Early Return Mode                    [d]

   AH = 06h
   AL = 00h clear early return mode
      = 01h set early return mode

Note:  if early return mode is set then SCSI will return with no errors
     when the last DMA transfer is started in a call with AH=13h or AH=14h
   if this routine is not called, early return mode is cleared

See Also: AH=13h,AH=14h,AH=15h