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《01.PowerPC.History》.pdf
A Brief Introduction of The
A Brief Introduction of The
History of PowerPC
History of PowerPC
© Copyright IBM Corporation 2009
IBM 801 - The Very Beginning of PowerPC
IBM 801 - The Very Beginning of PowerPC
In 1970s, John Cocke at IBM Watson Research Lab started a
research project on improving computer architecture design in a
manner now collectively known as “RISC”
In 1977, the resulting CPU, IBM 801, is produced
All instructions complete in one clock cycle
15MIPS,
No FPU
Was one of the first RISC CPU chip
801 was named after the building where the project was done
IBM 801 was used in many IBM products, including 370 main frames
in early 1980s
John Cocke later won both the Turing award and the Presidential
Medal of Science for his work on the 801.
Page 2 © Copyright IBM Corporation 2009
POWER – The Parent of PowerPC
POWER – The Parent of PowerPC
1985, IBM Watson Research Lab started the research project on the
second-generation RISC architecture based on the lessons learned
from IBM 801
The main research points include
Superscaler
Add of FPU
The effort resulted in the POWER architecture
Stands for Power Optimization With Enhanced RISC
The first implementation of POWER architecture was released on
1990 – the POWER1
POWER1 were used in
RS/6000 in early 1990s
Central Processor for Mars Pathfinder mission
POWER1 is the chip where PowerPC is descended
Page 3 © Copyright IBM Corporation 2009
The Birth of PowerPC
The Birth of PowerPC
Around 1991, IBM approached Apple with the goal to develop microprocessors for
large volume market based on POWER
Apple, then the largest customers of Motorola’s desktop-class microprocessor, asked
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