Question
1) Given the following set of instruction frequencies and CPI values, calculate the average CPI of the system. A) Instruction Type Frequency CPI A 25%
1)
Given the following set of instruction frequencies and CPI values, calculate the average CPI of the system.
A)
Instruction Type | Frequency | CPI |
A | 25% | 4 |
B | 25% | 2 |
C | 1% | 20 |
D | 49% | 3 |
B
Instruction Type | Frequency | CPI |
A | 25% | 3.5 |
B | 25% | 2 |
C | 1% | 50 |
D | 49% | 3 |
2)
Which of the above two systems has better performance.
3)
Convert the following MIPS assembly into machine code, both binary and hex:
A)
add $t3, $t2, $s1
B)
addi $s4, S1, 123
C)
beq $s4, $t1, Label
D)
lw $s1, 64($s2)
Assume Label is 32 bytes away from the beq instruction.
E)
sw $s1, 64($s2)
Assume Label is 32 bytes away from the beq instruction.
4)
Write MIPS assembly code that performs the operations described by the following C code.
A)
A = B + C + D + 6;
Assume the variables are stored in the following registers:
A $s2
B $t2
C $s1
D $t1
B)
A = B + C + D + 6;
Assume the memory addresses where each variable is located is stored in the following registers:
A $s2
B $t2
C $s1
D $t1
C)
if (A <= B)
{
D = D + 1
}
else if (B == C)
{
B = C + 2
}
else
{
C = D + 2
}
Assume the variables are stored in the following registers:
A $s2
B $t2
C $s1
D $t1
Reminder: Youll need to create some labels to do this.
Convert the assembly into machine code (hex)
Assume the PC is starting at address: 0x20000050
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