[A83] Re: Random numbers

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: Random numbers
From: "Tijl Coosemans" <tijlc@hotmail.com>
Date: Fri, 10 Aug 2001 19:08:44 +0200
Reply-To: assembly-83@lists.ticalc.org


The r register has only *7* signifcant bits, so numbers from 0 to 127.


>From: Peter-Martijn Kuipers <hyper@hysoft-automation.com>
>Reply-To: assembly-83@lists.ticalc.org
>To: assembly-83@lists.ticalc.org
>Subject: [A83] Re: Random numbers
>Date: Fri, 10 Aug 2001 15:06:46 +0200 (CEST)
>
>
>Depends on what you need, if you only need an 8-byte integer, you can use
>the 'r' register, which is normally (not in the 83(+,SE)) used for dynamic 
>memory refresh, but contains a pseudo-random number based on the amount of 
>clock-cycles ran.
>you can use it only with ld a,r and ld r,a (no use in the latter)
>if you have a fixed number of clock-cycles between each read (if you don't 
>wait for user input or let a wait routine depend on an arbitrary changing 
>mem address), though, you will have the same difference between the reads.
>
>e.g.
>1 - 6
>63 - 9
>
>--(Peter-Martijn)
>
>
> >
> > What is the best random number generator routine , in terms of
> > effectiveness and speed ?
> >
> > TruRand seems to be slow (it uses OPs), and I can't paste Joe Wing's
> > random numbers routine (that is used in Ion and Zlib) in my program.
> >
> >
> >
> > 
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