Computer Science (computer architecture)

Questions 1, 5, 6, 7, 25.

1. What are the four steps CPUs use to execute instructions?

5. Give the java statement that produced the following IJVM code:
ILOAD i

DUP

IADD

ILOAD k

DUP

IADD

ISUB

BIPUSH5

IADD

ISTORE j

6. In the text we mentioned that when translating the statement if (Z) goto L1; else goto L2 to binary, L2 has to be in the bottom 256 words of the control store. Would it not be equally possible to have L1 at, say, 0 x 40 and L2 at 0 x 140? Explain your answer.

7. In the microprogram for Mic-1, in if icmpeg3, MDR is copied to H. A few lines later it is ubtracted from TOD to check for equality. Surely it is better to have one statement: if cmpeq3 Z=TOS - MDR; rd Why is this not done?

25. In the first draft of this book, Fig. 4-39 showed a three-way associative cache instead of a four-way associative cache. One of the reviewers threw a temper tantrum, claiming that student would be horribly confused by this because 3 is not a power of 2 and computers do everything in binary. Since the customer is always right, the figure was changed to a four-way associative cache. Was the reviewer right? Discuss your answer.