checksum\checksum ........\checksum.c ........\checksum.LST ........\checksum.M51 ........\checksum.OBJ ........\checksum.Opt ........\checksum.plg ........\checksum.Uv2 ........\checksum_Opt.Bak ........\checksum_Uv2.Bak ........\STARTUP.A51 ........\STARTUP.lst ........\STARTUP.obj checksum