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LAHF (Load Accumulator High Flag) is an assembly language instruction used in x86 architecture to load the status of the flags in the processor's status register into the lower byte of the accumulator (AL register). Specifically, it transfers the state of the Sign Flag (SF), Zero Flag (ZF), Auxiliary Carry Flag (AF), and Parity Flag (PF) into the AL register. This instruction is often utilized for status checking and manipulation in low-level programming. It is part of the instruction set that allows for more complex control flow and condition handling in assembly programming.
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How do you unscramble lahf?
The anagram is half.
What is the difference between instruction registers and instruction pointer?
instruction register is used to store the next instruction to be executed. instruction pointer is used to store the address of the next instruction to be executed.
What part of speech is the word instruction?
Instruction is a noun.
What is 1 byte instruction in microprocessor?
1byte instruction = MOV A,B 2byte instruction = MVI A,01H 3byte instruction = STA 2030H
How many instructions are in the ARM instruction set?
There is one instruction set in the IA-32. Instruction set is the set of instruction that a processor can execute.
How does the CPU keep track of which instruction to execute next?
The instruction register holds a pointer to the current instruction (in working memory) while the next instruction register points to the next instruction (the first instruction immediately after the current instruction's operands). If the current instruction is a jump instruction, it can change the next instruction register, allowing the program to branch to a new instruction once the jump instruction is processed. The next instruction pointer is automatically moved into the current instruction register once the current instruction has been processed. The entire process of executing an instruction is known as the fetch-decode-execute cycle.
What is the meaning of supervision of instruction?
what is supervision of instruction
What is an absolute instruction?
An absolute instruction is an assembly language instruction using only absolute addresses.
What factor help in deciding the length of instruction format?
the number of bits required to represent an instruction of a cpu is known as length of the instruction or known as instruction.
What is a standing instruction?
A standing instruction is an instruction that remains in effect for an indefinite time. That is, it remains in effect until the office or person who issued the instruction retracts or cancels it.
What is the use of instruction decoder?
Instruction decoder takes bits stored in the instruction register and decodes it and tells to CPU what it need to do for it and enable the components for the operation. Simply, instruction decoder is like a dictionary. It tells the meaning of the instruction.
What is the plural form of instruction?
The plural of instruction is instructions.
