Exercises

A collection of exercises for practicing RISC-V assembly, from simple arithmetic to more complex programs.

How it works

Each exercise presents an assembly program to be traced instruction by instruction. For each step:

1. Look at the next instruction to be executed and write it in the table along with its PC address
2. Run that instruction in the simulator
3. Check which register was modified and record its new value in the corresponding column

Repeat until the program ends

Pseudo-instructions

Some exercises use pseudo-instructions such as la, j, jr, and nop. In the simulator’s text segment, each instruction is shown in two columns:

• Basic: the real instruction generated by the assembler
• Source: the original pseudo-instruction as written in the source code

When a row corresponds to a pseudo-instruction, fill in both columns of the table: copy the Basic value into the Instruction column and the Source value into the Pseudo-instruction column.

After completing an exercise, use the Save as PDF button to export and keep your answers

• ➤ Exercise 1

  Arithmetic operations using addi, add and sub instructions.

• ➤ Exercise 2

  Array manipulation and memory addressing with lw, sw and la instructions.

• ➤ Exercise 3

  Conditional branching with the beq instruction and if-statement control flow.

• ➤ Exercise 4

  If-else control flow using bne and unconditional jump with the j instruction.

• ➤ Exercise 5

  While loop with array indexing using lw, bne, and j instructions.

• ➤ Exercise 6

  For loop control flow using slti and beq instructions.

• ➤ Exercise 7

  Procedure calls using jal and jr ra instructions.

• ➤ Exercise 8

  Stack usage to save and restore registers across procedure calls.