How do I clear my flag register?

To clear the flag bits, write ‘1’s to the desired bits. The flags are not affected by the Interrupt Enable Register. I2C Port 2 Interrupt: This bit indicates the I2C port 2 bus interrupt flag. I2C Port 1 Interrupt: This bit indicates the I2C port 1 bus interrupt flag.

How do you clear all flags?

Tip Type this command into Notepad, then save the file as clearflag. bat. Thereafter, to clear all flags, just type ClearFlag.

Which command is used to clear the direction flag register?

Clear Direction Flag (cld)

How can delete flag register in 8085?

Unfortunately the 8085 does not have a ‘reset carry’ instruction, but it does have ‘set carry’ and ‘complement carry’. By loading different numbers into the register and/or varying the other instructions you could set or reset flags at will.

What is the function of flag register?

The Flag register is a Special Purpose Register. Depending upon the value of result after any arithmetic and logical operation the flag bits become set (1) or reset (0). In 8085 microprocessor, flag register consists of 8 bits and only 5 of them are useful.

Which flag is not a machine control flag?

Which of the following is not a machine control flag? Explanation: The flag register of 8086 is divided into status flags or condition code flags and machine control flags. Direction, Interrupt, Trap flags comes under machine control flags. 14.

What are the flag registers of 8086?

8086 has 16-bit flag register, and there are 9 valid flag bits….Status Flags.

Flag Bit	Function
CY	This is carry bit. If some operations are generating carry after the operation this flag is set to 1
O	The overflow flag is set to 1 when the result of a signed operation is too large to fit.

Which instruction uses flags?

Arithmetic and logical instructions set some or all of the flags, and conditional jump instructions take variable action based on the value of certain flags. For example, jz (Jump if Zero), jc (Jump if Carry), and jo (Jump if Overflow) depend on specific flags.

What is the difference between conditional and control flags?

It contains flip flops which indicate the condition or the status of the result. The are two types of flags: Conditional Flags: Carry Flag, Auxiliary Flag, Parity Flag, Zero Flag, Sign Flag, Overflow Flag. Control Flags: Trap Flag, Interrupt Flag, Direction Flag.

Which is not a flag of 8085 microprocessor?

However, in our 8085 instruction set does not provide any instruction, which explicitly uses the AC flag. Sign flag (S): The S flag is set to 1, when the result thus produced against any logical or arithmetic operations is negative, indicated by MS bit of 8-bit result being 1.

How many flags in 8085 is accessible?

Flag is a flip flop used to store the information about the status of the processor and the status of the instruction executed most recently. There are five flags in 8085. They are sign flag, zero flag, Auxiliary carry flag, and parity flag and carry flag.

What is the result for push PSW?

PSW stands for PROGRAM STATUS WORD. PSW combines accumulator A and flag register F….Program –

MEMORY ADDRESS	MNEMONICS	COMMENT
2000	PUSH PSW	Push value of accumulator and flag in stack
2001	POP H	Pop value from TOP of memory stack in H
2002	MOV C, H	C <- H
2003	MOV H, B	H <- B