PIC Microcontoller Math Method

Increment / Decrement

Best 16 bit

From Scott Dattalo

;inc
	dec	high
	incsz	low
	inc	high


A downcounting version;
;dec
	test	low
	snb	Z
	dec	high
	dec	low


on the 18cxxx you can simplify these to:

  infsnz  low,f
	inc	high

and
  tstfsz  low,f
	dec	high
	dec	low