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Documentation Home > IA-32 Assembly Language Reference Manual > Chapter 2 Instruction-Set Mapping > Flag Instructions > Load Flags into AH Register (lahf). IA-32 Assembly Language Reference Manual. Previous: I/O Instructions · Next: Store AH into Flags (sahf)
and quadword operands. As with the integer instructions, the following list of MMX instructions is divided into subgroups. STC. Set carry flag. CLC. Clear the carry flag. CMC. Complement the carry flag. CLD. Clear the direction flag. STD. Set direction flag. LAHF. Load flags into AH register. SAHF. Store AH register into flags.
Which one of the following can avoid weld decay of austenitic stainless steels? (-Gate metallurgical engineering 2014) 1 Answer Explain the 8085 instruction set. 1 Answer In an 8085 system, a PUSH operation requires more clock cycles than a POP operation. Which one of the following options is the correct reason for this?
Microprocessor 8086 Instruction Sets - Learn Microprocessor in simple and easy steps starting from basic to advanced concepts with examples including Overview, Classification, 8085 Architecture, 8085 Pin Configuration, 8085 Addressing Modes and Interrupts, 8085 Instruction Sets, 8086 Overview, 8086 Functional Units,
AND Instruction -. This Performs a bitwise Logical. AND of two operands. The result of the operation is stored in the op1 and used to set the flags. AND op1, op2 LAHF Instruction. -. Copy low byte of flag register to AH. ? LDS Instruction. -. Load register and Ds with words from memory –. LDS register, memory address of
18 Mar 2014 This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Instruction Set of 8086/8088 – 1". 1. The instruction that is used to transfer the data from source operand to destination operand is a) data copy/transfer instruction b) branch instruction c) arithmetic/logical instruction
20 Jul 2013 MOV: The function of MOV instruction is to transfer a byte or word of data from a source location to a destination location. . This LAHF instruction was provided to make conversion of assembly language programs written for 8080 and 8085 to 8086 easier. . Complete set of instructions with descriptions
This is a multipurpose instruction used to read the status of interrupts 7.5, 6.5, 5.5 and read serial data input bit. The instruction loads eight bits in the accumulator with the following interpretations. Example: RIM. SIM, none, Set interrupt mask. This is a multipurpose instruction and used to implement the 8085 interrupts 7.5,
Table 1a 8086 Data transfer instruction set summary. Opcode. Operand flags are affected. LAHF. LAHF. AH < FlagsL. Copy the low order flag byte into AH. SAHF. SAHF. FlagsL < AH. Copy AH into the low order flag byte. IN AL, 01H. AL< Port 01H. IN Table 2 8086 PUSH and POP Instructions set summary. Opcode.
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