It's about microprocessorsintel 8085

[naziakat]

can anyone please post some notes about the flags?what does each one contain?
please..
thanks!

 

[berkeman]

can anyone please post some notes about the flags?what does each one contain?
please..
thanks!

Do you have the databook and programmer's manual? What do they say about the flags?

 

[oswaler]

Sure, I'd be happy to provide some information about the flags in the Intel 8085 microprocessor. The 8085 has five flags, which are used to indicate certain conditions or states during operations. These flags are the Sign (S), Zero (Z), Auxiliary Carry (AC), Parity (P), and Carry (CY) flags.

The Sign flag (S) is set to 1 if the result of an operation is negative, and 0 if the result is positive. This flag is useful for determining the sign of a number.

The Zero flag (Z) is set to 1 if the result of an operation is zero, and 0 if the result is non-zero. This flag is helpful for checking for zero values in calculations.

The Auxiliary Carry flag (AC) is used for operations involving BCD (Binary Coded Decimal) numbers. It is set to 1 if there is a carry from the lower nibble (4 bits) to the upper nibble during addition or a borrow from the upper nibble to the lower nibble during subtraction.

The Parity flag (P) is set to 1 if the result of an operation has an even number of 1s in its binary representation, and 0 if it has an odd number of 1s. This flag is useful for checking for even or odd numbers.

The Carry flag (CY) is set to 1 if there is a carry or borrow from the most significant bit (MSB) during addition or subtraction, respectively. This flag is important for detecting overflow in calculations.

I hope this helps provide a better understanding of the flags in the Intel 8085 microprocessor. Let me know if you have any further questions.