Figure 6-5, Instruction timing—cache hit – IBM POWERPC 750GL User Manual

Page 220

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User’s Manual
IBM PowerPC 750GX and 750GL RISC Microprocessor

Instruction Timing

Page 220 of 377

gx_06.fm.(1.2)

March 27, 2006

Figure 6-5. Instruction Timing—Cache Hit

6 fadd

1 fadd

0 add

10

11

8 add

1

2

3

4

5

6

7

8

0

Fetch (in IQ)

In dispatch entry (IQ0/IQ1)

Execute

2 add

3 fadd

9 add

4 b

10 add

11 add

12 fadd

9

7 fadd

•••

Complete (In CQ)

13 add

14 fadd

3

2

1

0

7

6

11

10

9

8

7

12

11

10

9

14

13

12

11

10

9

14

13

12

11

(16)

(15)

14

13

12

(17)

(16)

(15)

14

13

(18)

(17)

(16)

(15)

5

4

3

2

3

2

1

0

6

3

2

1

8

7

6

3

2

1

8

7

6

3

10

9

8

7

6

11

10

9

8

7

12

11

10

9

14

13

12

11

14

13

12

14

13

12

1

0

Instruction
Queue

Completion
Queue

5 fsub

In retirement entry (CQ0/CQ1)

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