Sahf instruction

lahf/sahf
string instructions in 8086sahf x86
in instruction x86
the sahf instruction copies the cpu status flags to the ah register.
shift instructions in 8086

X86-assembly/Instructions/sahf · Description · Example. Loads SF, ZF, AF, PF, and CF from AH into EFLAGS register. * Valid in specific steppings. See Description section. Instruction Operand Encoding ¶. Op/En SAHF--Store AH into Flags. Opcode. Instruction. Clocks. Description. 9E. SAHF. 2. Loads SF, ZF, AF, PF, and CF from AH into EFLAGS register12. The LAHF and SAHF Instructions · LAHF instruction loads lower byte of the EFLAGS register into AH register. · The lowest 8 bits of the flags are transferred:. 2 Instruction-Set Mapping > Flag Instructions > Store AH into Flags (sahf) Example. Load values from the AH register into the flags word: sahf. Assembly language LAHF and SAHF instructions. The LAHF (load status flag bit to AH) instruction copies the low byte of the EFLAGS register to AH. SAHF - Store AH Register into FLAGS DI is incremented/decremented based on the instruction format (or operand size) and the state of the Direction Flag.