How to check whether it is ZERO or not?

Hi I have a COUNT variable. When power up the PIC don’t know what value in it. (It depends on the last saved value in EEPROM)

I want to check whether it is ZERO or other. If it is zero I want to goto NORMAL program. If not zero I want to goto UPDATE routine.

Here is my code please tell me am I right?

Yep that'll work. MPASM also has a couple of macros built in to make that eaiser.

so..

PS movf will set the zero flag, you don't need the xor.

Another useful way to test for zero is movf COUNT,F. This will set/clear the zero flag without corrupting W.

Mike.

Oh I see now I got it.Everywhere I'm corrupting W I must prevent this by moving the value to the FILE register.

Also built in macros really helpful.I must give a try for that.

Thank you both of you for the instant replies.