Explain different types of flags in 8085 microprocessor?

Answer 1

Flags are microprocessor dependent. ie flags are different for different microprocessors. Flag represents the status ( & Type) of the operation performed.

Ex: In terms of 8085 we have 5 flags : Zero, Carry, Ac Carry, Parity, Sign

Flag register is of 8 bits in this case.

These flags can also be used for logic implementation.

Answer 2

Zero flag: if result is 0 than it is set condition i.e.1 Other wise it is reset i.e.is 0. Carry flag: if an extra bit arises than it is set condition I.e.1 otherwise it is reset i.e.is 0. Sign flag: in it only D7 is considered. if D7 is 1 than it Is set condition i.e.1 but if D7 is 0 than it is reset i.e. is 0. Parity flag: if number of 1's in the answer is even than it Is set condition i.e.1 otherwise it is reset i.e.is 0. Auxiliary carry flag: if a carry is generated in D3 & passed To D4 than ac flag is set condition i.e.1 otherwise it is Reset i.e.is 0.

Answer 3

The flags register in the 8085 contains various statuses... CARRY - Carry or borrow resulted from addition or subtration

SIGN - Result is negative

ZERO - Result is zero

PARITY - Result has an even number of one's

AUXCARRY - Result has a carry out of bit 3 - Use to support BCD arithmetic Each flag is set or reset, for certain instructions only, based on the result of that instruction.

Answer 4

there are five flags in microprocessor in 8085 that are: 1) sign flag 2) zero flag 3) auxillary flag 4) parity flag 5) carry flag

Answer 5

Flags records any occurrence of carry, auxiliary carry, sign, zero and odd/even parity after any arithmetic and logical operation.

Answer 6

flags are the status signals which generate after the instruction exicution

Answer 7

7