Unix clone for amiga 500?/3D algorithms?

[HCART%VAX.OXFORD.AC.UK at pucc.princeton.edu]

1.  Has anyone any knowledge of a public domain Unix clone for an
    Amiga 500?  I do not have ftp access to the US, so a set of
    C routines, or a source of floppy disks would be most welcome.

2.  Does anyone have any suggestions on a good book showing
    algorithms to display and manipulate 3-D objects?

    Thanks for any help.

    Hugh Cartwright.  Physical Chemistry, Oxford University.
                      HCART at OXVAX.OXFORD.AC.UK