Contents of the "human68k" sub-archive for UnZip 5.1 and later:

  Contents       this file
  Makefile.gcc   (shorter) makefile for GNU C on X68000
  human68k.c     Human68K-specific routines for UnZip
  options.s      TwentyOne option checker (assembler routines) for Human68K

Note that options.s contains high-order ASCII characters; it must be
treated as a binary file when e-mailing or posting via Usenet.