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Incrimenting a 16bit number with a PIC

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chevymn1964

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Hey Everyone, I have another head scratcher... What would be a good way to incriment and decriment a 16 bit number? Im using a PIC16F676 and programming in assembly... Thanks for any help!
 

Thanks for the reply IanP, I already found that link and I have no clue how macro's work and how to impliment them into my code...
 

Code: 
DEC_16BIT_NUMBER

	decfsz REGISTER_L,f	
	return		
	decfsz REGISTER_H,f	
	return		
;###################################
INC_16BIT_NUMBER

                incf REGISTER_L,f
                movf REGISTER_L,W 	
	xorlw 0X00 				
	btfss STATUS,Z 			
	return
                incf REGISTER_H,f
	movf REGISTER_H,W 	
	xorlw 0X00 				
	btfss STATUS,Z 			
	return

I usualy use this way. and I didn't get where is your problem.
 
You can visit this website for PIC math methods. This one has a huge source code library.

Code: 
[url]http://www.piclist.com/techref/microchip/routines.htm[/url]

Regards
tr_pic
 

Hey Everyone, I've got it working with modifying the macro verson in IanP's link. Thanks for all the help!!!
 

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