Question

What is the type and hexadecimal representation of the following instruction (machine code): sw t1, 32(t2)?

1) R-type, 0x8d090020
2) I-type, 0xad090020
3) J-type, 0x8d090020
4) R-type, 0xad090020

Answer 1

The instruction 'sw t1, 32(t2)' is an I-type MIPS instruction for storing a word in memory, with the hexadecimal representation 0xad090020.

Step-by-step explanation:

The instruction given is sw t1, 32(t2), which stands for store word. The store word instruction is used in MIPS (Microprocessor without Interlocked Pipeline Stages) assembly language to store a 32-bit word in memory. Considering MIPS architecture, this instruction is an I-type instruction as it includes an immediate value (32 in this case) and is used for data transfer operations. The hexadecimal representation of this instruction is 0xad090020.

Breaking down the hexadecimal instruction 0xad090020:

• 'ad' represents the opcode for store word.
• The next '09' represents the source register t2 from which the base address is read.
• '20' is the immediate value, which is the offset from the base address in hexadecimal.
• The register 't1' is implied in the instruction format, which is the register that contains the data to be stored.