Conditional Instructions JZ and JNZ

[jones86]

jz jnz

These both instructions JZ and JNZ are not working for me. ie for JZ(Jump on Zero) though the accumulator is not zero, i am getting the jump instruction executed.

Pls help my explaining in small programs

 

[nandhu015]

jz y jnz instrucciones

Please give more details, what software are you using and what microcontroller etc.

Nandhu

 

[betwixt]

condicional instructions

Those instructions usually check the zero flag in a status register, not the contents of the accumulator.

As Nandhu says, we need more information. A section of code showing the problem would help.

Brian.

 

[ark5230]

jz to jnz

Please post the microcontroller type used and the portion of code (JZ, JNZ) is giving trouble.

 

[Somphorn]

jnz $-20

betwixt is correct. jz and jnz will check to see the ZERO flag, not the accumulator. This condition is true for any microprocessor, I believe. Basically, something is done in previous two or three instructions before JZ and after that you test the zero flag. You might wanna read more on how the zero flag is affected by other instructions.