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PENTIUM ARCHITECTURE:

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• REGISTER SET
• INSTRUCTION FORMAT
• ADDRESSING MODES

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REGISTERS:

The processor has 16 registers for use in general systems. These registers can be grouped as:

General purpose data registers:

• Eight registers are available for storing operands and pointers.

• These are EAX, EBX, ECX, EDX, ESI, EDI, EBP, and ESP.

• These are provided for holding operands for logic and arithmetic operations, operands for address calculations, memory pointers.
• The ESP register should be used very carefully. It holds the stack pointer and generally should not be used for any other purpose.
• There are some special uses of each register:

EAX: Accumulator for operands and result data.
EBX: Pointer to data in the DS segment.
ECX: Counter for......

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Approximate Word Count: 2174
Approximate Pages: 9 (250 words per double-spaced page)

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