Date   : Tue, 16 Jan 2007 13:07:08 -0000
From   : christopher.whytehead@... (chris whytehead)
Subject: PEDL Z80 Second Processor

For those interested,

I have finally added the Technomatic/PEDL Z80 second processor to my web
site:

http://acorn.chriswhy.co.uk/8bit_Upgrades/Technomatic_MultiformZ80.html

There are also HiRes pictures of the top and bottom of the circuit board.
The pictures are slightly cropped but otherwise as the camera took them. I
hope they are clear enough

> "chris whytehead" <christopher.whytehead@...> wrote:
> > > > I just saw a PEDL Z80 second processor unit on ebay
> (http://cgi.ebay.co.
> > > Nuts! I was out-bid minutes before the auction finished.
> >
> > Sorry about that, I couldn't resist it
>
> If you have the chance, sould you take an image of the ROM? Joel
> says it plugs into the 1MHz bus, not the Tube bus, so if I had the
> ROM image I could probably work out a host program for it.
>
> If at all possible, a high enough resolution picture of the top
> and the bottom of the PCB to work out the circuit diagram would
> be nice.

Now to find a EPROM programmer to read the ROM. I have one which I picked up
in a box of Acorn bits, its called a Stack S2000 intelligent Programmer, but
I didn't get any software or documentation. Does anyone know how it works? I
tried goggling but didn't find anything useful.

Chris
Chris
--
How does a project get to be a year late?... One day at a time.
Chris's Acorns    http://acorn.chriswhy.co.uk