What is Jnz instruction?
The JNZ instruction transfers control to the specified address if the value in the accumulator is not 0. If the accumulator has a value of 0, the next instruction is executed. Neither the accumulator nor any flags are modified by this instruction.
What does JNC instruction do?
The JNC instruction transfers program control to the specified address if the carry flag is 0. Otherwise, execution continues with the next instruction. No flags are affected by this instruction.
What do you mean by JC and Jnz?
1 Answer. 1. 3. JC = Jump if carry set (C=1) JNC = Jump if carry is not set (C=0) JZ = Jump if zero-flag is set JNZ = Jump if zero-flag is not set JEQ = Jump if equal => another ‘name’ for JZ (There are many instruction aliases’).
What is XOR microprocessor?
The XOR operation performs bit-wise XOR of the two operands. If X is a bit of Accumulator, and Y is a bit of the other operand in the same bit position, the XOR operation is performed as per the following truth table.
What is JNE instruction?
Description. The jnz (or jne) instruction is a conditional jump that follows a test. It jumps to the specified location if the Zero Flag (ZF) is cleared (0). jnz is commonly used to explicitly test for something not being equal to zero whereas jne is commonly found after a cmp instruction.
What is the full form of Jnz?
The Full form of JNZ is Jump if Not Zero, or JNZ stands for Jump if Not Zero, or the full name of given abbreviation is Jump if Not Zero.
What is the difference between JZ and JNZ?
3 Answers. JE and JZ are just different names for exactly the same thing: a conditional jump when ZF (the “zero” flag) is equal to 1. (Similarly, JNE and JNZ are just different names for a conditional jump when ZF is equal to 0.)
How JMP is different from Jnz?
This is performed by the JMP instruction….Conditional Jump.
| Instruction | Description | Flags tested |
|---|---|---|
| JNE/JNZ | Jump not Equal or Jump Not Zero | ZF |
| JG/JNLE | Jump Greater or Jump Not Less/Equal | OF, SF, ZF |
| JGE/JNL | Jump Greater/Equal or Jump Not Less | OF, SF |
| JL/JNGE | Jump Less or Jump Not Greater/Equal | OF, SF |
Why do we use XRA instruction?
In 8085 Instruction, XRA is a mnemonic that stands for “eXclusive OR Accumulator” and “R” stands for any of the following registers, or memory location M pointed by HL pair. This instruction is used to Ex-OR contents of R with the Accumulator. The result of Ex-OR operation will be stored in the Accumulator.
Which pin of 8085 MPU is multiplexed?
Pins 12 to 19 of 8085 are AD0 – AD7 which is the multiplexed address-data bus. Multiplexing is done to reduce the number of pins of 8085.
What does MOV mean in assembly?
Data Movement Instructions The mov instruction copies the data item referred to by its second operand (i.e. register contents, memory contents, or a constant value) into the location referred to by its first operand (i.e. a register or memory).
What does JNE mean in assembly?
What is JNZ in 8085 microprocessor?
Jump if not zero (JNZ) result in 8085 Microprocessor Microprocessor 8085 In 8085 Instruction set, we are having one mnemonic JNZ a16, which stands for “Jump if Not Zero” and “a16” stands for any 16-bit address. This instruction is used to jump to the address a16 as provided in the instruction.
What is JNC in 8085 microprocessor?
Jump if not Carry (JNC) in 8085 Microprocessor. In 8085 Instruction set,we are having one mnemonic JNC a16, which stands for “Jump if Not Carry” and “a16”stands for any 16-bit address. This instruction is used to jump to the address a16 as provided in the instruction.
What are the jump instructions in 8085 microprocessor?
Conditional and Unconditional JUMP instructions in 8085 Microprocessor Microprocessor 8085 In 8085 Instruction set,there are a set of jump instructions, which can transfer program control to a certain memory location. So after these branching mnemonics we shall have to mention 16-bit target address of the location.
How many mnemonics are there for jump instruction in 8085?
Under unconditional jump instructions there is only one mnemonic i.e. JUMP. But under conditional Jump instructions we are having 8 different mnemonics. We know that there are 5 flag bits in 8085 Flag register. They are S, Z,P, Cy, AC. Out of them only on AC flag bit, there is no jump instruction.