(5/5)

Question 1

A block of memory contains 50 random words of data. Assume that the values are in two’s complement representations and are stored in the R/W memory area. You need to provide the 50 random words and to include them in an initialization file: assign2.ini. Write a program using the ARM assembly programming language to do the following:

- a) You are required to reverse the word order in a block of 50 random words (Hint: the last word stored in the memory becomes the first and vice versa).
- b) Next, find the minimum and maximum value in the 50 random words of data.

Question 2

- a) Write a subroutine using the ARM assembly programming language to construct tables of 20 (n = 0, 1, 2, …, 19) 32-bit data. There are 2 inputs to the subroutine. One is an option and the other is the starting address of the table to be constructed. There are 2 possible options: 1 or 2. This option will dictate how you should construct the table. This is shown as followed:

option = 1: Build a table of an arithmetic sequence numbers. This sequence has a difference of 3 between each number. The pattern is continued by adding 3 to the last number each time, like this: 1, 4, 7, 10, 13, 16, 19, 22, 25, ... Assume that the first number is 1.

option = 2: Build a table of a geometric sequence numbers. This sequence has a factor of 3 between each number. The pattern is continued by multiplying by 3 to the last number, like this: 1, 3, 9, 27, 81, 243, ... Assume that the first number is 1.

- b) Write the main program using the ARM assembly programming language to call the subroutine written in part (2a). The main program needs to provide the 2 inputs to the subroutine: an option and the starting address of the table to be constructed.

Hint: you need to use the key concepts of table generation, jump table, and subroutine.

(5/5)

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