Re: [TenTec] Paragon is it dead?

[Louis Ciotti <lciotti1@gmail.com>]

That is great Carl, When the CPU comes in (Hopefully by the weekend) I 
will have to see if anything changes.
Carl Moreschi wrote:
> I have Paragon code that I developed that adds some features.  I can't 
> burn eproms anymore but I can help you here.
> Carl Moreschi N4PY
> 58 Hogwood Rd
> Louisburg, NC 27549
> www.n4py.com
>
> On 9/14/2016 12:42 PM, Louis Ciotti wrote:
> > Fresh battery is in place.
> >
> > I really thing it is either a dead CPU or the EEPROM got scrambled.  I
> > found a source for a low cost CPU so I ordered it.
> >
> > When looking at the signals with the O'scope, the IRQ line does not look
> > right:
> >
> > https://goo.gl/photos/6ohJcT8Lu4qrSsVp9
> >
> > All the other logic line look nice with out the finky ripple on the 
> > lines.
> > If I remove the CPU this line goes to nice smooth a logic high, which is
> > what ll the digital line with a logic high on it look like.
> >
> > If I swap the CPU and that does not cure it, I am going to say the 
> > EEPROM
> > is dead.
> >
> > I wonder if TenTec would have the source code for the 6805 assembly 
> > code,
> > or the EPROM image stored somehwere and I can re-burn since it looks 
> > like I
> > can still get the eprom as well, I just would need to get a burner.
> >
> >
> > On Tue, Sep 13, 2016 at 2:41 PM, Stuart Rohre<rohre@arlut.utexas.edu>
> > wrote:
> >
> > > One of the posts mentioned checking to see if the back up battery is 
> > > fresh
> > > (and full voltage).  If the coin type batteries or similar are used, 
> > > they
> > > may need replacement in 3 to 7 years depending on type.
> > >
> > > Memories are pretty reliable, unless they have been plugged in and 
> > > out too
> > > much as in computer ram sticks.
> > >
> > > Stuart Rohre
> > >
> > > K5KVH
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