Below is the syntax and the encoding. The instruction below computes (t1+t2) and stores the result in register t0 and also in the memory at address zero. The addz instruction always uses address zero in the memory.

addz $t0, $t1, $t2

Unique

T1

T2

T0

0

0

Opcode rs rt rd shamt funct

a) Give the functional form of the instruction based on the register names.

b) Give the functional form based on the instruction fields.

c) Draw the changes on the datapath diagram.

d) Give the values of the control signals.

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Repeat the question above for the add to zero' instruction (addz). Below is the symtax and the encoding. The instruction below computes (t1+t2) and stores the result in register to and also in the memory at address zero. The addz' instruction always uses address zero in the memory. addz Sto, $t1, $t2 opcode rd Shamt funct