Powerpc Processor

A Seminar on

Power pc Processor By Vikramaditya-67

Main functional unit of power PC Instructi ons

Instruct ion unit

Integer unit

Instructio ns Floatingpoint unit

Cache

Main memory

FR 0 FR

Floatingpoint resisters

1

F R31

0

6 3 General purpose resisters

R 0 R 1

R3 1 C R XE R

0 0 0

3 1 3 1 3 1

Condition resisters Integer-exception resisters

Addressable data units 0

8

Byte 0

1 6

2 4

3 2

4 0

4 8

Byte 1

Half word 0

Half word 2

Word 0

Word 4

Double

5 6

6 3

The instructions of power-PC:

Load and store instructions.

Arithmetic & logic instructions..

Arithmetic & logic instructions..

Arithmetic & logic instructions..

Condition codes The powerPC keeps the condition code flags in two resisters CR & XER called condition resister. 0

1

2

3

4

3 1 Resister CR

0

1

2

3

3 1 Resister XER

Resister(CR)& Integer Exception resister(XER)

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Flow control instrutions Addressing modes for branch Instrutions

Relative A.M. Absolute. Register indirect A.M.

Consider the instrution. B 2500

0

P C

6 7

3 3 0 1

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