In English

Publisher: Sunshine Books, 1984

ISBN: 0-946408-15-7 (Wikipedia Book Sources) (Wikipedian kirjalähteet)

The main part of this book works on the development of a high resolution turtle graphics system for the Commodore 64. The discussion in the text is complemented with numerous appendices explaining specific topics not readily available for the CBM64 user.

The topics covered include PEEKS & POKES, binary and other arithmentic, the use of logical operators to produce special effects, the VIC-ROMAN II and CIA chips, the arrangement and relocation of memory, the theory of plotting, simple geometry.

Boris Allan only assumes the knowledge of the Commodore 64 User Manual. All the moves, from relocating BASIC to the more advanced turtle graphics routines, are explained and documented in great detail.