Question

Write mips assembly program to calculate: 500−100+(250−75)+30−15

a) By setting registers to immediate values
b) By setting memory to store input numbers

Answer 1

To calculate the given arithmetic expression using MIPS assembly language, you can use either immediate values or memory. This can be done by setting registers to immediate values or by setting memory to store input numbers.

Step-by-step explanation:

To calculate the given arithmetic expression using MIPS assembly language, we can use either immediate values or memory to store the input numbers. Here's how you can do it:

a) By setting registers to immediate values:

1. Load the constant values into registers using the li instruction. For example, li $t0, 500 loads the value 500 into register $t0.
2. Perform the arithmetic operations using the appropriate instructions. For example, to subtract 100 from 500, you can use the sub instruction: sub $t0, $t0, 100.
3. Continue performing the remaining operations and storing the results in different registers.
4. Add the final results using the add instruction. For example, add $t4, $t0, $t1 adds the values stored in $t0 and $t1 and stores the result in $t4.

b) By setting memory to store input numbers:

1. Store the input numbers in memory locations. For example, using the sw instruction, you can store the value 500 in memory location 0 ($t0) and the value 100 in memory location 4 ($t1).
2. Load the values from memory into registers using the lw instruction. For example, lw $t0, 0($t0) loads the value from memory location 0 into register $t0.
3. Perform the arithmetic operations using the appropriate instructions, using the values stored in registers.
4. Store the intermediate results in memory locations.
5. Finally, load the results from memory into registers and perform the final addition to get the overall result.

These are just basic steps, and you would need to write the complete MIPS assembly code to calculate the expression.