MIPS Tutorial 38 - 2D Array Implementation

# MIPS Tutorial 38 - 2D Array Implementation Video Lecture - MIPS Assembly Programming Simplified - Electronics and Communication Engineering (ECE)

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## FAQs on MIPS Tutorial 38 - 2D Array Implementation Video Lecture - MIPS Assembly Programming Simplified - Electronics and Communication Engineering (ECE)

 1. How do I declare a 2D array in MIPS?
Ans. To declare a 2D array in MIPS, you need to first reserve space for the array using the `.data` section and then initialize the array elements using the `.word` directive. Here's an example: ``` .data array: .word 1, 2, 3, 4 .word 5, 6, 7, 8 .text main: # Accessing array elements la \$t0, array lw \$t1, 0(\$t0) # Accessing element at row 0, column 0 lw \$t2, 4(\$t0) # Accessing element at row 0, column 1 lw \$t3, 8(\$t0) # Accessing element at row 1, column 0 lw \$t4, 12(\$t0) # Accessing element at row 1, column 1 ``` In this example, the 2D array "array" has two rows and four columns.
 2. How do I access a specific element in a 2D array in MIPS?
Ans. To access a specific element in a 2D array in MIPS, you need to calculate the offset of the element based on its row and column indexes, and then load the value from the memory using the `lw` instruction. Here's an example: ``` .data array: .word 1, 2, 3, 4 .word 5, 6, 7, 8 .text main: la \$t0, array li \$t1, 0 # Row index li \$t2, 2 # Column index # Calculating the offset mul \$t3, \$t1, 4 # Multiply row index by 4 (4 bytes per element) add \$t3, \$t3, \$t2 # Add column index to the offset add \$t4, \$t0, \$t3 # Add offset to the base address # Accessing the element at row 0, column 2 lw \$t5, 0(\$t4) ``` In this example, the element at row 0, column 2 is accessed by calculating the offset as (row index * 4) + column index.
 3. How do I initialize a 2D array in MIPS?
Ans. To initialize a 2D array in MIPS, you can use the `.word` directive to assign values to the array elements in the `.data` section. Here's an example: ``` .data array: .word 1, 2, 3, 4 .word 5, 6, 7, 8 .text main: la \$t0, array li \$t1, 0 # Row index li \$t2, 2 # Column index # Calculating the offset mul \$t3, \$t1, 4 # Multiply row index by 4 (4 bytes per element) add \$t3, \$t3, \$t2 # Add column index to the offset add \$t4, \$t0, \$t3 # Add offset to the base address # Accessing and printing the element at row 0, column 2 lw \$t5, 0(\$t4) li \$v0, 1 move \$a0, \$t5 syscall ``` In this example, the 2D array "array" is already initialized with values 1, 2, 3, 4 in the first row and 5, 6, 7, 8 in the second row.
 4. Can I have different data types in a 2D array in MIPS?
Ans. No, in MIPS, a 2D array can only have a single data type. MIPS is a low-level assembly language and does not provide built-in support for data structures with different types. If you need to store different data types in a 2D structure, you can either use separate 2D arrays for each data type or use a struct to represent each element in the array.
 5. How do I iterate over a 2D array in MIPS?
Ans. To iterate over a 2D array in MIPS, you can use nested loops to traverse each row and column of the array. Here's an example: ``` .data array: .word 1, 2, 3, 4 .word 5, 6, 7, 8 .text main: la \$t0, array li \$t1, 0 # Row index li \$t2, 0 # Column index outer_loop: # Inner loop for columns move \$t2, \$zero # Reset column index inner_loop: # Calculating the offset mul \$t3, \$t1, 4 # Multiply row index by 4 (4 bytes per element) add \$t3, \$t3, \$t2 # Add column index to the offset add \$t4, \$t0, \$t3 # Add offset to the base address # Accessing and printing the current element lw \$t5, 0(\$t4) li \$v0, 1 move \$a0, \$t5 syscall addi \$t2, \$t2, 1 # Increment column index blt \$t2, 4, inner_loop # Check if column index is less than 4 addi \$t1, \$t1, 1 # Increment row index blt \$t1, 2, outer_loop # Check if row index is less than 2 ``` In this example, the nested loops iterate over each row and column of the 2D array "array" and print the corresponding element.

## MIPS Assembly Programming Simplified

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