[Coco] OT: 63B09

[gene heskett]

On Saturday, October 29, 2011 04:40:56 PM Louis Ciotti did opine:

> I can across an NTE6809 processor and thought I would give it a try as a
> replacement for the 63b09.  It has an identical Pinot so I figured it
> may work.  I plug it in the socket, and I get nothing at all.  The
> external clock (4mhz) crystal does not even work, which on the one I am
> trying to replace does.  Is the IC bad, or is it a compatibility issue.
 
For the coco, you need to one with the xxx09E designation, indicating it 
uses an external clock and crystal.

> On Thursday, October 20, 2011, Louis Ciotti <lciotti1 at gmail.com> wrote:
> > Off topic, but since the CoCo uses 6809s, figured someone on here
> > might
> 
> know about this.
> 
> > I have a radio controller from circa late 80s that uses a 63B09 that I
> 
> think may be bad.  What can I use in its place and is there a source?
> 
> > The problem I am seeing is RN6(Pins 24-31) has some "noise" on the
> > line
> 
> and the waveform is not exactly square like the rest of the data lines
> when observed with an oscilloscope.
> 
> 
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Cheers, Gene
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