For MPLAB assembly code for PIC18 is WREG the same as the working register? For example, if I use...

Question

Question

for MPLAB assembly code for PIC18 is WREG the same as the working register?

For example, if I use the instruction MOVF WREG,W what will happen?

Answer 1

Answer #1

Well I tried the following code in MPLAB 8.83 for PIC18F452

movlw 55 ; load working register with 55H

movf WREG,W

The contents of WREG remained 55H after the second instruction. So WREG basically copied itself to itself.

Hope it helps.

Answer 2

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