The following fig shows memory with addresses and instructions, the PC and the I
ID: 3679221 • Letter: T
Question
The following fig shows memory with addresses and instructions, the PC and the IR.
Answer the following questions about this diagram. Be sure to show the hexadecimal answers as 8 hexadecimal digits plus the leading 0x.
Questions:
The address of the first instruction to execute is --------------.
What is the first instruction placed into the IR? Give the entire instruction. --------------
After the first instruction is fetched, the PC has what value? ----------------------
When the PC is 0x00400008, what instruction is placed into the IR? Give the entire instruction. -------------------
After the second fetch, what is the value in the PC? -----------------------
When the sub instruction is fetched, what is the new value of the PC? --------------------
The IR is ---------------------- bits wide.
The IR holds an instruction while the PC holds a(n) --------------------------
Explanation / Answer
1)0x00400000
2)ori $s1,$0,5
3)0x00400004
4)sub $s0,$s0,$s1
5)0x00400008
6)0x00400012
7)32-bit
8)Instruction in a(n) location in memory i.e mem[a(n)]
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