williams-et-al-1983-apple-ii-computer-graphics

CHAPTER 10-SHAPING UP 117Exercises1. Write a BASIC program to lower HIMEM and then load the shapetable which contains the saucer in the space created above HIMEM.2. Extend the program in Exercise 1 to DRAW the saucer at every evenpoint between (6, 1 ([)([)) and (2©©, 1©©).3. Repeat Exercise 2, but use XDRAW instead of DRAW.4. At every point between (6, 1©©) and (2©©, 1©©) XDRAW the saucertwice in succession, and then move to the next point and XDRAWtwice again, and so on.