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Computer Science (a) Shujaa power activation: The game compare the car’s position data
with the positions of obstacles
allows players to activate “Shujaa
Power,” which grants a temporary
stored in an array. How would you
speed boost. This activation is
use addressing modes to efficiently
triggered by a button press. A
compare the car’s position with
FOR ONLINE READING ONLY
flag value (0 for not pressed, 1
in memory? Explain your approach
for pressed) is stored in a specific multiple obstacle positions stored
memory location. Which addressing to a teammate who might be less
mode would be most efficient for familiar with addressing modes.
the instruction that checks this flag (e) Optimizing performance: The game
value, and why? needs to run smoothly on various
(b) Car position update: During the mobile devices. How can your
race, the car’s position on the understanding of addressing modes
track is constantly updated based help you optimise the game code
on various calculations. The new for performance? Explain your
position data needs to be stored in approach considering the trade-offs
a specific variable within a complex between different modes.
data structure representing the car (f) Research another addressing mode
object. Which addressing mode not covered in this section (such
would be suitable for the instruction as, base displacement addressing).
that stores the new position, and Explain a scenario in the game
how would you communicate this engine where this addressing mode
addressing mode choice to another might be useful and why.
programmer working on the same
code?
(c) Dynamic difficulty adjustment: The Register Transfer Language
game can adjust difficulty based on Register Transfer Language (RTL) is
player performance. An array stores a symbolic notation used to describe
pre-defined difficulty settings. the flow of data between registers and
Based on the player’s score, the other functional units within a digital
program needs to access a specific system, like a CPU. It acts as an
difficulty setting within the array. intermediate representation (IR) between
Which addressing mode would be high-level programming. languages and
appropriate, and how could you the actual machine code instructions
modify the code to dynamically executed by the processor. RTL helps us
adjust the difficulty based on an understand how data is manipulated within
external factor (player score)? the CPU at a register level, providing a
(d) Collision detection: To check more detailed view compared to machine
for collisions, the game needs to code. RTL uses the common addressing
modes discussed in the previous sections.
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for Advanced Secondary Schools
Computer Science Form 5.indd 66 23/07/2024 12:32
