The length of the NOP is the same as the length of an instruction (it
actually is an instruction that does nothing), which is one clock cycle, so
it depends on the speed of the oscillator timing the pic. The instruction
cycle time can be calculated using the formula:

                        instruction cycle = oscillator period * 4

Where the oscillator period is the reciprocal of the frequency or:

                        period = 1 / oscillator frequency (measured in Hz)

A delay can be made by a loop that loops a certain number of times. Also you
can use
 GOTO $ +1 as a delay. It is twice as long as a NOP because GOTOs take two
instruction cycles to execute. All it means is go to the next instruction.
Hope this helped.

-----Original Message-----
From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On
Behalf Of Tal Bejerano - AMC
Sent: Friday, July 19, 2002 6:16 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: [PIC]: NOP Delay


Hi 2 All

A friend (really new to pics) ask me about the NOP delay
He look at some samples at piclist archive and found that in one sample nop
gives 0.122msec
he's question is: what cause the delay time?

Regards

Tal Bejerano
AMC - ISRAEL

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body

--
http://www.piclist.com#nomail Going offline? Don't AutoReply us!
email listserv@mitvma.mit.edu with SET PICList DIGEST in the body