D Lloyd <PICLIST@MITVMA.MIT.EDU> wrote:

> >     LFSR:   RLF     RANDOM,W
> >             RLF     RANDOM,W
> >             BTFSC   RANDOM,4
> >             XORLW   1
> >             BTFSC   RANDOM,5
> >             XORLW   1
> >             BTFSC   RANDOM,3
> >             XORLW   1
> >             MOVWF   RANDOM
> >             RETLW   0
>
> Pretty predictable (short-term), isn't it?

    Well, yeah... But that's because the original question asked for
    an 8-bit pseudo-random number generator.  "RANDOM" is only 8 bits
    wide, so the routine produces a 255-step sequence.

    -Andy


=== Andrew Warren - fastfwd@ix.netcom.com
=== Fast Forward Engineering - San Diego, California
=== http://www.geocities.com/SiliconValley/2499