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> От: Dmitry Kiryashov <zews@AHA.RU>
> Кому: PICLIST@MITVMA.MIT.EDU
> Тема: Multi-byte counter trick
> Дата: 22 сентября 1997 г. 12:00
> 
> Hello Piclister members !
> 
> I am sure that I am not first discover of this but it's greate !
> PIC have nice ability to implement normal multi-byte counters .
> Look at example below . (Let it will 3 byte incrementing)
> ---
>         incfsz  low,f
>          skpnz
>         incfsz  medium,f
>          skpnz
>         incf    high,f
> ---
> Last instruction is INCF not INCFSZ .
> Execution time is always equal to 7 clocks !
> 
> So any n-byte inc/dec operation have execution time equal to: 1+(n-1)*3
> And previous carry flag not corrupted .
> 
> WBR Dmitry.
SKPNZ - это не инструкция процессора, а подстановка, расширяемая 
ассемблером в 2 байта. Вот отсюда и все твои проблемы.
	Александр.