[SOLVED] Does the ASM command MOVF TEMP,W remove the value stored in theTEMP register?

[JohnJohn20]

In ASM, the command MOVF TEMP,W moves the value stored in the TEMP register into the W register. Does the value in theTEMP register remain unchanged or is it deleted?

What about MOVWF TEMP? Does moving the value in the W register into the TEMP register remove the value from the W register or leave it unchanged?

While there are a lots of explanations for these commands, I can't find one that actually states what happens.

Thanks.

Thanks.

 

[maxeen]

in both cases, all values remains the same

 

[wp100]

Hi,

In the datasheet of the chip you are using there is the Instruction Set Summary, in there is the full description of MOVWF and it gives a clear example of the state of those registers before and after execution.

Also if you use MPLABs SIM and a watch window you can single step though your code and see exactly what happens to your data in W and TEMP.

 

[JohnJohn20]

Thank you both. Just wasn't clear from the datasheet:
MOVWF Move W to f
Syntax: [ label ] MOVWF f
Operands: 0 ≤ f ≤ 127
Operation: (W) → (f)
Status Affected: None
Description: Move data from W register to register ‘f’. which doesn't answer my question.