EEL 4768: Computer Architecture Homework 4 QUESTION 1. (10 points) Modify the single-cycle datapath by implementing the 'load word indexed'...
Modify the single-cycle datapath by implementing the â€˜load word indexedâ€™ instruction (lwx). Below is the
syntax and the encoding. The instruction below reads the word from memory address (t1+t2) and stores it
in register t0.
$t0, ($t1 + $t2)
Give the functional form of the instruction based on the register names.
Give the functional form based on the instruction fields.
Draw the changes on the datapath diagram.
Give the values of the control signals.
Repeat the question above for the â€˜pushâ€™ instruction. Below is the syntax and the encoding. The
instruction below pushes register t0 on the stack. Notice that the rs field encodes register sp and that the
immediate value is equal to 4.
The stack in MIPS is a full descending stack. Therefore, in the push operation, the register is written to
memory address (sp-4), then the value of (sp-4) is written to register sp.
Repeat the question above for the â€˜incrementâ€™ instruction (inc). Below is the syntax and the encoding. The
instruction below increments both registers t0 and t1 by 4. Notice that the immediate value in the
instruction is equal to 4.
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