Int 31 Fn FFFB  P - Causeway V1.3 - "cwcload" - Load/expand Cwc-compresse  [E]

   AX = FFFBh
   BX = source file handle
   ES:EDI -> memory buffer into which to expand file

Return: CF clear if successful
       ECX = expanded data length
   CF set on error
       EAX = error code (01h file error, 02h bad data, 03h not CWC file)

Note:  the provided file may consist of the concatenation of several CWC
     files; the one beginning at the current file position will be
     expanded

See Also: AX=FF2Bh