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Decodes and executes instructions using the Arithmetic Logic Unit (ALU), flags, and general-purpose registers. 2. Architecture and Register Organization 22415 rar
Operands are located in registers (e.g., MOV AX, BX ). To excel in this subject, you can refer
Handles external bus operations, including fetching instructions, reading/writing data from memory, and maintaining a 6-byte instruction queue (pipelining). Instruction Set Categories Data Transfer: MOV , PUSH
Uses a base or index register plus an optional displacement. 4. Instruction Set Categories Data Transfer: MOV , PUSH , POP , XCHG , IN , OUT . Arithmetic: ADD , SUB , INC , DEC , MUL , DIV . Logical: AND , OR , NOT , XOR , SHL , SHR . Branch/String: JMP , CALL , RET , LOOP , MOVS , CMPS . 5. Memory Segmentation