Int 1A Fn 6C04  - Snap.exe 3.2+ - "snap_copyto" - Copy Data To Resident S  [N]

   AX = 6C04h
   STACK:  WORD    offset within SNAP data segment of dest (nonzero)
       WORD    segment of source buffer
       WORD    offset of source buffer
       WORD    number of bytes to copy

Return: AX = offset of byte after last one copied to destination
   STACK unchanged
Program: SNAP.EXE is a TSR written by IBM and Carnegie Mellon University
     which implements the Simple Network Application Protocol

See Also: AX=6D04h