Std instruction in 8086

 

 

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cld instruction in 8086 example
setting of direction flag in 8086 causescmps instruction in 8086
repne instruction in 8086
cld in assembly language
lodsb instruction in 8086
cld instruction in 8086

 

 

This instruction is used to set the Direction Flag to 1 so that SI/DI will automatically decrement when one of the string instructions executes. Usage STD. In case it is set to 1 (using the set-direction-flag instruction STD ) — the string is processed from highest to lowest address. This is called auto- Instructions > Clear Direction Flag (cld). IA-32 Assembly Language Reference Manual. Previous: Set Interrupt Flag (sti) · Next: Set Direction Flag (std) STD. No operands. Set Direction flag. SI and DI will be decremented by chain instructions: CMPSB, CMPSW, LODSB,. LODSW, MOVSB, MOVSW, STOSB, STOSW. Microprocessor - 8086 Instruction Sets, The 8086 microprocessor supports 8 types of instructions ? STD ? Used to set the direction flag DF to 1. Opcode, Instruction, Op/En, 64-bit Mode, Compat/Leg Mode, Description. FD, STD, ZO, Valid, Valid, Set DF flag. Instruction Operand Encoding ¶

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