[Coco] New 6821, 6551 replacements

[Steven Hirsch]

On Mon, 2 Feb 2009, jdaggett at gate.net wrote:

> I also noted that they quoted doing ASIC with 0.8 micron CMOS process to
> get their 14 MHz processor. I would rather believe that getting much faster
> than that will be hard for that old CMOS technology.  That was state of the
> art back in the 80's.

I'm amazed that they can find a fab anywhere in the world still producing 
0.8um chips.

> Today the technology is at 0.045 micron. About 20
> times smaller.

And that's for mass-market products.  32 and 22 nanometer processes are 
already under development for cutting edge applications.

> There used to be three different commercial cores for the 6809 that was
> availble. Lat time I checked I can only find reference to one IP core left on
> the web. It claims 40 MHz speed but does not state whether that is in an
> ASIC or FPGA. Alas I have yet to see a 6309 core.

Have you looked at System09 at opencores.org?  It claims to be a 6809 
system-on-a-chip.  The CPU is broken out in its own file and should be 
easy to reapply.

Steve


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