this is a test-release of a implementation of a chunky screen just by using
copper colour changes.  You may need to run the demo a few times to get a
better view of the mountains.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
-rwxrwxrwx 21152/999       332     870  38.2% -lh5- 739c Mar 22  1994 cop.h
-rwxrwxrwx 21152/999     11593   18768  61.8% -lh5- 8926 Mar 22  1994 cop2
-rwxrwxrwx 21152/999      1797    8638  20.8% -lh5- 4b90 Mar 22  1994 copasm.a
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         3 files   13722   28276  48.5%            Mar 29  1994