深入理解计算机操作系统第六章家庭作业

6.22

0.5

6.23

6.005ms

6.24

A: 16ms
B: 24s

6.25

m	c	B	E	S	t	s	b
32	1024	4	4	64	24	6	2
32	1024	4	256	1	30	0	2
32	1024	8	1	128	22	7	3
32	1024	8	128	1	29	0	3
32	1024	32	1	32	22	5	5
32	1024	32	4	8	24	3	5

6.26

m	c	B	E	S	t	s	b
32	2048	8	1	256	21	8	3
32	2048	4	4	128	23	7	2
32	1024	2	8	64	25	6	1
32	1024	32	2	16	23	4	5

6.27

A: 0x08A4 - 0x08A7, 0x0704 - 0x0707
B: 0x1238 - 0x123B

6.28

A.
None

B.
0x18F0 - 0x18F3
0x00B0 - 0x00B3

C.
0x0E34 - 0x0E37

D.
0x1BDC - 0x1BDF

6.29

A.

      11   10    9    8    7    6    5    4    3    2    1   0
    +----+----+----+----+----+----+----+----+----+----+----+----+
    | CT | CT | CT | CT | CT | CT | CT | CT | CI | CI | CO | CO |
    +----+----+----+----+----+----+----+----+----+----+----+----+

B.

read/write	addr	hit?	value(or unknown)
read	0x834	No	unknown
write	0x836	No	unknown
read	0xFFD	Yes	0xC0

6.30

A.

C = E * B * S = 128B

B.

  12   11   10    9    8    7    6    5    4    3    2    1   0
+----+----+----+----+----+----+----+----+----+----+----+----+----+
| CT | CT | CT | CT | CT | CT | CT | CT | CI | CI | CI | CO | CO |
+----+----+----+----+----+----+----+----+----+----+----+----+----+

6.31

A.

  12   11   10    9    8    7    6    5    4    3    2    1   0
+----+----+----+----+----+----+----+----+----+----+----+----+----+
|  0 |  0 |  1 |  1 |  1 |  0 |  0 |  0 |  1 |  1 |  0 |  1 |  0 |
+----+----+----+----+----+----+----+----+----+----+----+----+----+

B.

param	value
CO	0x02
CI	0x06
CT	0x38
hit?	Yes
return	0xEB

6.32

A.

  12   11   10    9    8    7    6    5    4    3    2    1   0
+----+----+----+----+----+----+----+----+----+----+----+----+----+
|  1 |  0 |  1 |  1 |  0 |  1 |  1 |  1 |  0 |  1 |  0 |  0 |  0 |
+----+----+----+----+----+----+----+----+----+----+----+----+----+

B.

param	value
CO	0x00
CI	0x02
CT	0xB7
hit?	No
return	--

6.33

0x1788 - 0x178B
0x16C8 - 0x16CB

6.34

src:

	c0	c1	c2	c3
r0	m	m	h	m
r1	m	h	m	h
r2	m	m	h	m
r3	m	h	m	h

dst:

	c0	c1	c2	c3
r0	m	m	m	m
r1	m	m	m	m
r2	m	m	m	m
r3	m	m	m	m

6.35

src:

	c0	c1	c2	c3
r0	m	h	h	h
r1	m	h	h	h
r2	m	h	h	h
r3	m	h	h	h

dst:

	c0	c1	c2	c3
r0	m	h	h	h
r1	m	h	h	h
r2	m	h	h	h
r3	m	h	h	h

6.36

A.
100%

B.
25%

C.
25%

D.
no

E.
yes 12.5%

6.37

全是 25%

6.38

1024
128
12.5%

6.39

1024
256
25%

6.40

1024
256
25%

6.41

0.25

6.42

0.25

6.43

100%

6.45

循环展开

6.46

循环展开