6809 SBC (was Editor religious wars (was Re: Museums))

[Henk Gooijen]

From: "Ben" <bfranchuk at jetnet.ab.ca>
Sent: Thursday, January 28, 2010 7:50 PM
To: "General Discussion: On-Topic and Off-Topic Posts" 
<cctalk at classiccmp.org>
Subject: Re: 6809 SBC (was Editor religious wars (was Re: Museums))

> David Betz wrote:
>
>> Thanks for the suggestion but I was hoping for something actually had
>> a 6809 chip on it.
>
> It is too bad, you have zillions of 6502 projects out there, but
> not a one 6809 cpu board. The really hard part is finding a
> IDE interface. OS9 is modular so all you should have to change is
> the driver code. Ben.
> PS. Google for Nintro 9, I think a open source version of OS.9.
> PPS. I still think you can by COCO III's.

If you just want a small 6809 SBC with one 6821 and one 6850,
you might take a look at the "blinkenboard" core board.
A similar small board will give you simple 64 TTL outputs and
64 TTL inputs (74LS373/LS374). There is also a design with
a 2793 FDC (working). Check out my website (folder "my projects").

An IDE interface is really simple, you can actually realize that with the
64 I/O board!
Maybe you need some additional hardware to support OS9. I am
not sure if the memory map for OS9 will fit on the 6809 core board.
For example, I have the I/O mapped on $0000 - $007F, and RAM
starts at $2000.

- Henk (www.pdp-11.nl)