PET graphics

The book provides an introduction to the programming techniques used to generate graphic displays on the Commodore PET series of computers and a complete package of machine code routines (programs) giving a wide range of normally unavailable graphic functions. The programs are included in the book as 'print-outs' - ie as they would be seen if printed from the computer - and were also provided digitally on a 5.25" floppy disk. Explanations and instructions are included for each program. The book includes chapters on the basics of PET Graphics, Simple machine code display routines, Fine resolution plotting, Screen and character block scrolling, Double density plotting, Multiple screen page displays, Displaying and moving 'macro' characters and a Light pen for the PET. Two Appendices contain circuit diagrams for the PET video circuitry and a Table of ASCII codes used by the PET.