Question

Provide the type and assembly language instruction for the following binary value: 0000 0010 0001 0000 1000 0000 0010 0000_two.

Short answer

R-type, add $s0, $s0, $s0

Step-by-step solution

Define Instruction Format

The register names of the MIPS assembly languages are mapped to numbers. The registers from $s0 to $s7 are mapped to registers16 to 23, registers $t0 to $t7 mapped to registers 8 to 15.

The instructions are segmented into fields. The first and last will denote the operation of the instruction. The rest of the fields provide information about the operands and the result of the instruction.

Determine the type and the assembly language instruction.

There are two types of instructions R-Type and I-Type. R-type refers to the register instructions that have all the fields in the same length and I-type refers to the immediate and the data transfer instructions.

Here, the given binary value has the same length of the value in all the fields.

0000 0010 0001 0000 1000 0000 0010 0000_two.

So, the type of instruction is R-type.

Now change the bit format as follows:

6 bits	5 bits	5 bits	5bits	5 bits	6 bits
000000	10000	10000	10000	00000	100000

Convert the hexadecimal values to decimal

6 bits	5 bits	5 bits	5bits	5 bits	6 bits
000000	10000	10000	10000	00000	100000
0	16	16	16	0	16

From the first and the last field, it is clear that this is the add instruction.

16 is the number of the $s0 register.

So the instruction is add $s0, $s0, $s0