Re: 6702 chip

From: William Levak <wlevak_at_SDF.ORG>
Date: Sat, 12 May 2012 08:42:23 +0000 (UTC)
Message-ID: <Pine.NEB.4.64.1205120827370.28407@sdf.lonestar.org>
On Sat, 12 May 2012, William Levak wrote:

> I don't think it very likely that a chip the size of a 6702 can do an actual 
> divide.

Not divisions; simple counting circuits, the intervals as Kajtar Zsolt 
described.

Starting number, 214

128 toggled every 2 numbers
  64 toggled every 5 numbers
  16 toggled every number
   4 toggled every 7 numbers
   2 toggled every 3 numbers
   1 toggled every 6 numbers

The pattern repeats every 420 numbers. (I neglected that 14 and 60 have a 
common factor).

Each operation affects only one bit, the whole chip would require 8 
counting circuits and perhaps a couple registers.  The output would 
require a latched register.

This is from writing 0, followed by 1. Now that I have a formula, I can 
test what other numbers might do.


wlevak@sdf.lonestar.org
SDF Public Access UNIX System - http://sdf.lonestar.org

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