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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