14-08-2012, 12:48 PM
Pentium Pro Processor
[attachment=31446]
INTRODUCTION TO PENTIUM PRO PROCESSOR
Pentium Pro
It is a 6thgeneration x86 microprocessor developed and
manufactured by Intel introduced in November 1, 1995 .
2. It introduced the P6 microarchitecture (sometime
referred as i686) and was originally intended to replace
the original Pentium in a full range of applications.
3. While the Pentium and Pentium MMX had 3.1 and
4.5 million transistors, respectively, the Pentium Pro
contained 5.5 million transistors. Later, it was reduced to
a more narrow role as a server and high-end desktop
processor and was used in supercomputers likeASCI Red.
4. The Pentium Pro was capable of both dual- and quad- processor.
Pentium Pro Overview
The main goal in the design of the P6 family microprocessor was to exceed the pentium processor performance while utilizing the existing 0.6-micrometer,four layer,metal BICMOL manufacturing process.
The Pentium Pro Processor has a 3-way super scalar architecture,permitting the execution of up to three instructions per clock cycle.
The P6 superscalar implementation has dynamic execution ie: microdata flow analysis,out of order execution ,superior branch prediction & speculative execution object code is decoded by three instruction decode units working in parallel.
Pentium/Prentium Pro Processor
Modes in Pentium Pro
The Pentium and Pentium Pro processor has three operating modes:
Real-address mode. This mode lets the processor to address "real" memory address. It can address up to 1Mbytes of memory (20-bit of address). It can also be called "unprotected" mode since operating system (such as DOS) code runs in the same mode as the user applications. Pentium and Prentium Pro processors have this mode to be compatible with early Intel processors such as 8086
Memory Addressing
One can use either flat memory model or segmented memory mode. With the flat memory model, memory appears to a program as a single, continuous address space, called a linear address space
With the segmented memory mode, memory appears to a program as a group of independent address spaces called segments. When using this model, code, data, and stacks are typically contained in separate segments
[attachment=31446]
INTRODUCTION TO PENTIUM PRO PROCESSOR
Pentium Pro
It is a 6thgeneration x86 microprocessor developed and
manufactured by Intel introduced in November 1, 1995 .
2. It introduced the P6 microarchitecture (sometime
referred as i686) and was originally intended to replace
the original Pentium in a full range of applications.
3. While the Pentium and Pentium MMX had 3.1 and
4.5 million transistors, respectively, the Pentium Pro
contained 5.5 million transistors. Later, it was reduced to
a more narrow role as a server and high-end desktop
processor and was used in supercomputers likeASCI Red.
4. The Pentium Pro was capable of both dual- and quad- processor.
Pentium Pro Overview
The main goal in the design of the P6 family microprocessor was to exceed the pentium processor performance while utilizing the existing 0.6-micrometer,four layer,metal BICMOL manufacturing process.
The Pentium Pro Processor has a 3-way super scalar architecture,permitting the execution of up to three instructions per clock cycle.
The P6 superscalar implementation has dynamic execution ie: microdata flow analysis,out of order execution ,superior branch prediction & speculative execution object code is decoded by three instruction decode units working in parallel.
Pentium/Prentium Pro Processor
Modes in Pentium Pro
The Pentium and Pentium Pro processor has three operating modes:
Real-address mode. This mode lets the processor to address "real" memory address. It can address up to 1Mbytes of memory (20-bit of address). It can also be called "unprotected" mode since operating system (such as DOS) code runs in the same mode as the user applications. Pentium and Prentium Pro processors have this mode to be compatible with early Intel processors such as 8086
Memory Addressing
One can use either flat memory model or segmented memory mode. With the flat memory model, memory appears to a program as a single, continuous address space, called a linear address space
With the segmented memory mode, memory appears to a program as a group of independent address spaces called segments. When using this model, code, data, and stacks are typically contained in separate segments