Question

[30] <§3.5> If the bit pattern 0×0C000000 is placed into the Instruction Register, what MIPS instruction will be executed?

Short answer

The MIPS instruction “jal” will be executed.

Step-by-step solution

Define the concept.

The Jump and Link (jal) MIPS instruction is required for this mentioned purpose. This is used for jumping and linking the program sequence to the mentioned address. The opcode of this MIPS instruction is 000011.

Determine the calculation.

The given pattern is 0X0C000000.

0X0C000000 = 0000 1100 0000 0000 0000 0000 0000 0000 [as,“c” in the hexadecimal number system is equal to the 12 in the decimal number system, which is equal to 1100 in the binary number system].

This is a 32 bit MIPS instruction.

This can be written as,

000011(opcode) 00000000000000000000000000(target).

The opcode of the MIPS instruction “jal” is 000011.

Hence, the MIPS instruction “jal” will be executed and jump the program sequence to the address which is specified in the “target”.