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.)
What is JNE Jnz in assembly language?
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 Jnz Assembly?
JNZ is short for “Jump if not zero (ZF = 0)”, and NOT “Jump if the ZF is set”. If it’s any easier to remember, consider that JNZ and JNE (jump if not equal) are equivalent.
Are the Ja and JNBE instructions equivalent?
1 Answer. Assuming you mean the ja and jnbe mnemonics in x86 assembly: There’s no difference; they are two different mnemonics for the exact same instruction.
What is Jnz example?
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. But as it is a conditional jump so it will happen if and only if the present zero flag value is 0.
What is the function of Jnz?
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 is the difference between JC and JNC?
1 Answer. 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 Jnz in 8051?
How does CMP work in 8086?
The CMP instruction compares two operands. This instruction basically subtracts one operand from the other for comparing whether the operands are equal or not. It does not disturb the destination or source operands. It is used along with the conditional jump instruction for decision making.
How does Xchg work?
In 8085 Instruction set, there is one mnemonic XCHG, which stands for eXCHanGe. This is an instruction to exchange contents of HL register pair with DE register pair. After execution of this instruction, the content between H and D registers and L and E registers will get swapped respectively.
What is JC in 8051?
The JC instruction branches to the specified address if the carry flag is set. Otherwise, execution continues with the next instruction. No flags are affected by this instruction.
What do you mean by JC and Jnz?
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’s the difference between a JNE and a JZ?
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.) You could use them interchangeably, but you should use them depending on what you are doing:
When to use the JNZ or 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 does JNZ stand for in CMP Al 47?
JNZ is short for “Jump if not zero (ZF = 0)”, and NOT “Jump if the ZF is set”. If it’s any easier to remember, consider that JNZ and JNE (jump if not equal) are equivalent. Therefore, when you’re doing cmp al, 47 and the content of AL is equal to 47, the ZF is set, ergo the jump (if Not Equal – JNE) should not be taken.
What is the next instruction in x86-jnz?
The next instruction is a JNZ. My understanding was that the jump will take place if the Z flag is set. The Z flag IS set, but the jump doesn’t take place! Why? 43.52.4D. 43.52.4D. JNZ is short for “Jump if not zero (ZF = 0)”, and NOT “Jump if the ZF is set”.