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Flag Register (PSW)

  • Status is indicated with individual bits:
    • 0 - CF - Carry Flag
    • 2 - PF - Parity Flag
    • 4 - AF - Auxiliary carry Flag
    • 6 - ZF - Zero Flag
    • 7 - SF - Sign Flag
    • 8 - TF - Trap Flag
    • 9 - IF - Interrupt Flag
    • 10 - DF - Direcetion Flag
    • 11 - OF - Overflow Flag
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Show bitwise psw of 8085 and 8086 and explain the function of each flag with an example?

The Program Status Word (PSW) for the 8085 and 8086 microprocessors consists of various flags that indicate the status of operations. In the 8085, the flags include the Sign Flag (S), Zero Flag (Z), Auxiliary Carry Flag (AC), Parity Flag (P), and Carry Flag (CY). For example, if an operation results in a negative value, the Sign Flag is set, while if the result is zero, the Zero Flag is set. In 8086, the PSW includes similar flags but adds the Overflow Flag (OF), which indicates an overflow in signed arithmetic operations.


What is psw in 8086 microprocessor?

In the context of the 8086 microprocessor, PSW stands for Program Status Word. It is a 16-bit register that contains flags and status bits that reflect the outcome of arithmetic and logical operations performed by the processor. The PSW includes flags such as the zero flag, carry flag, sign flag, and overflow flag, which are crucial for controlling program flow and making decisions in assembly language programming. The PSW plays a significant role in determining the execution path of a program based on the results of previous instructions.


When was PSW Welahan created?

PSW Welahan was created in 2004.


What is a PSW?

Psw is a file format associated with programs. Microsoft uses the .psw file format. It can be used in mobile word processing.


How much money does a psw make in Ontario?

A PSW makes about 18 dollars an hour to start but that can vary.


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What is the role of a PSW helping a person with down syndrome


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Which IC is used as clock generator in 8086?

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Blockdiagram pin layoutof 8086 with figure?

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