Re: Any Schematics or OS for Zilog Z-8000 available on the web?

Hi Norm
 You should be able to find schmatics for the M20 made
by Olivetti at:

ftp://ftp.groessler.org/pub/chris/olivetti_m20/doc/english/hardware_manual/

 I have one of these and have brought up CP/M-8000 on it. The only
tricky thing you'll need to deal with is that you need to map the
memory such that at some point in the memory map you can ovelap
the instruction memory with the data memory so that you can then
have a 64K segment of instruction with another 64K segment used
for data memory. If you have some kind of DMA into the code
instruction memory, this may not be needed.
 Once you have a bios and this, I can generate a image that
will run CP/M-8000 with my olivetti, for you. Let me know
if you'd like to do this. I can also help with the memory mapping
if you are still a little confused.
Dwight


"Norm Dresner" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> "cheponis" <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
> > Dave Tweed wrote:
> > > Roberto Waltman wrote:
> > >
> > >>>I'm looking to create a coprocessing board for the PC with a Z-8000 CPU
>  and
> > >>>I was hoping to short-circuit some of my design and/or programming work
>  by
> > >>>finding anything available freely.
> > >>
> > >>Look for an old Circuit Cellar article, (Steve Ciarcia, Byte
> > >>magazine,) that did precisely that.
> > >
> > >
> > > See http://www.dtweed.com/circuitcellar/index.htm
> > >
> > > Scroll down to "BYTE Articles".
> > >
> > > -- Dave Tweed
> > >    Circuit Cellar archivist
> > >
> > Nobody would build such a board like that today, unless there were some
> > need for historical significance.  An FPGA or CPLD would probably be
> > used instead.
> >
>     Who cares?  The point is that it's a workable circuit which I can decide
> how to implement.
> 
>         Norm