As promised, the link I was referring to in previous posts regarding PIC delay
loop calculation. It is part of Sean Hugh Breheny's page which has other
useful PIC info.

http://www.people.cornell.edu/pages/shb7/lop.html

Regards,
Simon.
---

At 05:19 PM 8/5/02 -0400, Michael A. Powers wrote:

> bsf PORTB, 4
> bsf PORTB, 1  ;---------------------
> ; delay for at least 2ms
> movlw 0x95
> movwf Dlay
> movlw 0x02
> movwf Dlay + 1
> decfsz Dlay
>  goto $ - 1
> decfsz Dlay + 1
>  goto $ - 3
>
> bcf PORTB, 4 ; --------------------
>
>When I measured this on an oscilloscope, the actual delay came to be 1.2
>ms.
>If anything, it should be greater than 2 ms because I did not take the
>extra
>cycles that occur each borrow.  Does each subtraction that does not borrow
>take 3us to complete? (1us for decfsz, 2us for goto)

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