----- Original Message -----
From: johm <johm@FREE.FR>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Friday, December 15, 2000 2:57 AM
Subject: Re: [PIC]: Random numbers with a 16f84/16f877?


> Perhaps you can mix the use of a timer ( only one on 16f84 ) and the
program
> counter ( if your code is big enough and the number to generate is create
on
> IT).
>
> The solution I propose is to make a loop in your main program that
generate
> at least 256 word of code ( example "nop") and to let the timer0 to run.
If
> you generate your number with the interrupt code, you juste need to read
the
> PCL and the TMR0 and to make a exclusive OR or something like that.
> You just need the put a prescaler /= 1 and the value of the timer will run
> at a different speed than the program counter.
> I've never tested this solution, but i hope it will help you and it will
> generate something like a random number.
>
> Guillaume

This will _not_ work well because the timer is syncronized to the system
clock.

Bob Ammerman
RAm Systems
(contract development of high performance, high function, low-level
software)

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.