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In the 8085 microprocessor, DAD (Double Add) is an instruction that adds the contents of a specified 16-bit register pair (HL, BC, or DE) to the contents of the accumulator (A) and stores the result back in the 16-bit register pair. The flags affected by the DAD instruction are the Carry flag (CY) and the Parity flag (P). The Zero flag (Z) and Sign flag (S) remain unaffected. Additionally, the Auxiliary Carry flag (AC) is also not affected by this operation.
What else can I help you with?
Which flags effected after SUB B excution in 8085 miro processor?
All flags are affected after the SUB operation to reflect the result of subtraction.
How many flags in microprocessor 8085 are issued by Intel?
5 FLAGS
What are the various flags used in 8085?
there are 5 flags of intel 8085 are: Carry flag(CY), parity flag(P), Auxiliary Carry flag(AC), Zero Flag(Z), Sign flag(S).
Why DAD instruction only affect carry flag in 8085?
Carry
What is the use of command MOV A A in 8085 microprocessor?
The MOV A,A instruction in the 8085 does nothing, not even change flags. It only consumes time, specifically four clock cycles plus applicable wait states.
Write a program to set all flags of 8085?
; Exact answer: LXI H, FFFFH push H POP PSW
How compare instruction is used in 8085?
The compare and subtract instructions in the 8085 both subtract one operand from another, and set flags accordingly. The subtract instruction stores the result in the accumulator, while the compare instruction does not - except for the flags, the compare instruction "throws" the result away.
What micro controllers for a digital control system?
for dcs 8086 and 8085 are usually used as base microcontroller as these have indication flags which r signaled to registers
What are the flags affected by ALU in 8085 Explain briefly?
In the 8085 microprocessor, the Arithmetic Logic Unit (ALU) affects five flags in the status register: Sign Flag (S), Zero Flag (Z), Auxiliary Carry Flag (AC), Parity Flag (P), and Carry Flag (CY). The Sign Flag indicates the sign of the result; the Zero Flag is set if the result is zero; the Auxiliary Carry Flag is used for BCD operations; the Parity Flag indicates whether the number of 1s in the result is even or odd; and the Carry Flag indicates an overflow in arithmetic operations. These flags help in decision-making for subsequent operations and control flow in programs.
Why does 8085 microprocessor has 8 bit flag register when it has only 5 flags?
The 8085 microprocessor has an 8-bit flag register, even though it only has 5 flags, because all of the registers in the 8085 are 8-bit or 16-bit. In fact, the flags register is considered to be part of the accumulator, as one "register pair", for purposes of stack push/pop and interrupt call/return. Be warned, however, that you should not attempt to change the state of bits stored on the stack and then pop'ing them into AF, because some of the three "unused" bits might be undocumented but actually used, or their meaning might change between different versions of the chip.
Why the name 8085 Why the name 8085 for microprocessor?
8085 is a microprocessor designed by Intel
What are the status flags in 8085?
In the 8085 microprocessor, the status flags are specific bits in the flag register that indicate the outcome of arithmetic and logical operations. There are five main flags: the Sign Flag (S), Zero Flag (Z), Auxiliary Carry Flag (AC), Parity Flag (P), and Carry Flag (CY). The Sign Flag indicates the sign of the result, the Zero Flag indicates if the result is zero, the Auxiliary Carry Flag is used for BCD operations, the Parity Flag indicates if the number of set bits is even or odd, and the Carry Flag indicates an overflow in arithmetic operations. These flags are essential for decision-making in program execution and control flow.
