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Subtract from 00 !

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Suraj143

Active Member
I have a small question. After this code what is the value in W?

Thanks

Code: 
	movlw	.10
	movwf	Data
	clrf	Reference
	movf	Data,W
	subwf	Reference,W	
	????
 
It will subtract W from the file and so will do 0-10 = -10 or 246 or 0xf6.

Mike.
 
Last edited:
Suraj,

I think you'll find that taking the time to learn how to use the MPLAB Simulator and "watch" those file values while single stepping through your code might be a good investment. It certainly was for me...

Kind regards, Mike
 
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