Sinclair QL User Manual

4.
3.
2.
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Write a program to draw straight lines all over the screen. The lines should be
of random length and direction. Each should start where the previous one finished
and each should
have a randomly chosen colour.
Write a program to draw lines randomly with the restriction that each line has a
random
start on the lett hand edge of the screen.
Write a program to draw lines randomly with the restriction that the lines start at
the same point on the bottom edge of the screen
Write a program to produce Imes of random length, starting points and colour.
All lines must be horizontal.
5. As problem 4 but make the lines vertical.
PROBLEMS ON 1.
CHAPTER 3
6. Write a program to produce a square 'spiral' In such a way that each line makes
a random colour
HINT
First find the co-ordinates of some of the corners, then put them In groups
of four. You should discover a pattern.
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Sinclair QL Specifications

General

Processor	Motorola 68008
Clock Speed	7.5 MHz
RAM	128 KB (expandable to 640 KB)
ROM	48 KB
Operating System	Sinclair QDOS
Release Year	1984
Storage	Microdrive tape loop
Graphics	256x256 pixels, 8 colors
Ports	RS-232, ROM cartridge
Sound	Beeper (internal speaker)